Gas leaking from overflow tube motorcycle

1. A serious leak with massive amounts of air flowing into the system can cause non-idle condition, forcing the use of the gas pedal to keep the vehicle running. This may be a different area than where you're leaking, but it's something to check out. It stared with a slow leak when the bike was on the side stand and has progressively gotten worse. So I reved it a little but then noticed gas coming out of the vent from the Dec 27, 2012 · So I fire my bike up and realize I have a fuel leak at the quick connect, turns out the o-ring has a nick in it. It's just a PITA not being able to park it in the driveway ever. If I remove the spark plug wire from either of the outside plugs, it If you have fuel leaking from the carb this is what you do. It's only around a buck and a half for a small tube which is more than you need. So I will try here for now. Another cause of a gas leak is a sticking float inside the carburetor bowl. Carbuator leaks gas on motorcycle Two possibilities; the float bowl gasket is leaking, or the carburetor is overflowing (gasoline is coming out of the overflow tube). Watch this short video to see why it is leaking and how to fix it. Jan 03, 2009 · both of my my fuel overflow drainage pipe and fuel breather pipe are leaking gas and when is test to find the "crack" with a clear vinyl tube the fuel stops climbing just above where the fuel pump is at right a lil below the quick idle screw adjustment. 91 8-14-1939 Carburetors Leaking Gasoline - Starklite Indian Motorcycles - Vintage Indian Motorcycle Parts, Accessories, & Service. Remove the vent tube. slogger Been here awhile. Installed new carburator. If the leak persists, the connection fitting is probably bad and it may be time to replace the fuel line. Leave the carb cleaner sit in the carb for an hour. Check for a split gas line. Gas overflow line on the left side of the filler neck. Mar 12, 2009 · That drain (bottom of carb) is attached to a brass tube, in the float bowl, which allows 'excessively high' levels of fuel to drain away, keeping the carb from overflowing into the enginethe float itself has a metal tang, which bears upon the 'spring tip' of the float valve-you can bend this tang, 'VERY SLIGHTLY', to effect a small change, to raise or lower the fuel level, in the float bowl. Honda has been replacing them under warranty. Save Share. Jan 23, 2007 · It was only 12 bucks. BTW if you replaced the float needles and not the. Dec 06, 2016 · Riding a motorcycle, especially an older bike, can often mean doing a fair amount of maintenance. Hesitation or Engine Miss Upon Acceleration Hmm, I don't think it should leak out of the cap. Other leaks are quite rare. It's leaking slowly, but still leaking. 50 HCP3458SET12 OEM Mikuni fuel line Tube O-Ring, set of 12: $ 39. I replaced every hose on it. Called 'blowby' gas. Ya this is what I'm thinking too. Sometimes the plastic float leaks in and sinks. I read that it could be the float needle not working properly or there may be debris caught in there. You don't want that to happen. The float could also have a hole in it and is full of gas and is now unable to float up and shut off fuel. You only use the Pri to prime the carb, to let some gas into the bowl. Before i take it all apart again, any ideas what  Gas can leak from a motorcycle anywhere in between the motorcycle gas tank to the carburetor or fuel injector usually because a hose isn't on tight, a gasket is  For the most part it was ok to ride but starts leaking whenever it is idling. I go to the Honda dealer and buy the new needles for the carbs and I realize unlike alot of carberated engines th It's leaking from the carb overflow tube and is a constant stream while it's running and continues for over a minute after I it off. All Models Chief, Scout, Four. Inside the cap is a rubber seal, which can get lost at a refueling stop, causing gas to start leaking. As I said, several causes may occur. I think it's gas because it melted off my "HA" stickers on my fairings (and I don't think oil does that). If the bowl is overflowing, the ONLY possibilities are: 1) Leaking float valve - dirty, damaged rubber tip on float needle, or scratch on float seat face. It doesn't matter if the engine is running or not. I try to fill up 10 miles or so away from the house. May 27, 2008 · Close the drain screw. Plugging the vacuum line should have no bearing on this. Oil is changed every 2000 miles and i use 3 Mar 19, 2018 · That tube is your crankcase vent tube. Mar 14, 2011 · 1200 fuel leak from overflow. When turned off, it drips continually from this tub … read more Jul 14, 2010 · 05 sportsman 500 fuel leaks thru carb overflow tube - Answered by a verified Motorcycle Mechanic We use cookies to give you the best possible experience on our website. Even though it can be difficult to detect, fine scratched on the needle can also allow gas to flow into the bowl and eventually exit from the overflow tube. Turn the petcock to the off position, remove the fuel line from the petcock, loosen the screw on the bottom of the float bowl, drain out the gas, tighten the screw, fill the carb full of SEAFOAM (great stuff) through the fuel line and let it soak for 24 hours, then drain it out, tighten the drain screw, put the fuel line back on the carb, and turn the petcock back on. I have a 2006 60 EFI 4 stroke bigfoot. Stock carb and petcock (pump), New-ish fuel filter. If you fill it to full sitting upright, it'll leak on the kickstand, and especially if sitting in the sun as the fuel warms and expands. Only one hose connected to the petcock and it is the fuel line. Problems associated with the fuel level include damaged or leaking floats, incorrect float height settings, and a sticking or dirty needle valve (typical fuel will run out of the overflow tube if the valve is stuck open). Easiest way is to clean up the bottom and try and follow it up. Never use E85 (aka FlexFuel) in a carbureted motorcycle. Close the petcock and see what happens. Nov 26, 2009 · Gas leaking out of gas cap. But its normal for the float in the carb to get get stuck and cause the gas to overflow through the overflow tube. Easy to tell if it's happening, you can smell fuel in the oil. Not only for If any fuel leaks from the side of the vehicle that contains the filler neck, especially when the vehicle is being filled, then that could be a sign of a potential issue with the vehicle’s filler neck. In fact, I've used it to repair broken Float Pin posts in carburetors with great success where the Seal-All repair is immersed in gasoline constantly. It's nearly a steady stream and it makes a terrible mess. Nov 28, 2018 · Visit the post for more. The float bowl gasket doesn't sotp the leaking though, there is a over flow tube and the gas will leak regardless if it gets high enough in the float bowl. Jul 02, 2011 · Electra glides with EFI have an overflow tube that runs under the dash panel on the right side, down the frame and dump under the bike, right about where the trans is. I changed the oil two weeks ago and after driving for about 50 miles the oil has almost completely dripped out (only while riding). Clean up the carb and see if the problem persists. I have a Anyways, when I press the starter switch now the engine won't turn over and gas is leaking from a tube under the gas tank. It needs tp be replaced. Keep an eye on it. Aug 12, 2013 · Why is my motorcycle carb leaking fuel from bowl hose (not overflow), even when fuel is turned off!? I have a 1996 Yamaha DT200 with a 2 stroke oil injected engine. Sep 10, 2009 · I have just finished upgrading my 883 to a 1200. After starting it for a few times, gas will start to leak out of both the exhaust joins near the foot rests. There is no other connected and no other connections on the petcock. Last edited: Jun 8, 2010. When draining the fuel, open the petcock for better flow. I currently have fuel leaking (heavily) from the carburetor bowl hose (not the overflow), even though the screw is closed. A loose fuel line connection is easy to correct by tightening the connection at the carburetor. If a fuel shut-off line is leaking, replace it. Apr 09, 2011 · The type of carb leakage described in this video will typically leak from the carb overflow tubes, or out through the airbox or pod filters. Turn on the gas and the gas will rise in the tube to the level that the fuel in the bowl sits at. Tapping the float bowl with the handle of a screw-driver while it's running usually stops the over flow. Sometimes the fuelcock diaphragm will wear out and allow fuel to flow to the carburetor when the unit is shut down, which will cause excess fuel to dump out the overflow tube. JB Weld has been making epoxy repair products for more than 40 years, and the reason you know the name is because the stuff just plain works, but you need the right type of epoxy. Any cap that can let air in may let gas out on top of your tank. Sorry. Honda issued the recall Thursday. bowl gasket is even clolored all the way across except around the overflow port. The float should float up and shut off the air when the gas level gets near the bowl mating surface. Intake leaks tend to happen for different reasons on different bikes. The overflow tube draining should stop quickly. Great. Sometimes if you fill up then park immediately the fuel will expand and leak out the overflow. it dosen't go to the edge of the gasket but it does go to hole where the over flow port comes through the gasket. . Just recharge the battery. If a leaking gas valve or carb float needle cause gasoline to fill the engine crankcase and you attempt to run the bike, the fuel is then pumped through the system washing oil from vital areas such as bearings. I think BMW put the fuel overflow tube on my R80RT so it leaked onto the hot collector on purpose. 7 0 0. Apparently something isnt letting the float needle close all the way. If just flies out even when it running. Sep 19, 2019 · The top may leak where it fastens to the body, usually this is a very faint weeping, leaving stains, and no liquid fuel is seen. I ended up fixing the side stand and the carb was fine. Suddenly, today, major gas puddle underneath the bike starting. May 24, 2012 · Hello, I just purchased a 1996 club car with a FE290. I have changed the float and the needle valve and cleaned all the jets and seals are good. I used the same petcock from my old tank and did not use the vent tube though because the new tank has the vent plug on the bottom of the tank plugged? i have no clue why. I had the fuel valve off so I thought maybe it was left over gas from the last time I rode it. Obviously not normal. I forgot to turn the fuel petcock in my dr650 overnight for like 16 hours. Check the fuel shut-off valve for leaks, and ensure that the fuel lines fit tightly on the valve. Sounds like a bit of dirt on a float valve, or a sticking flow that has work itself free. Complete Restorations Available The return line is simply pushed inside the plastic gas tank through a hole on the bottom of the tank - a very iffy connection. Sep 04, 2017 · Fixing pinhole leaks in a fuel tank requires a little prep work and the right products. Safer for you and better for the enviroment and your garage floor. Your manual will tell you how high it should be. The ONLY way fuel gets into the bowl is through the float valve. There is a fluid leaking from one of the two drain tubes. The leaking is coming from a tube that looks like it is attached to the air box. You should run overflow tubes from the nipples to the ground so your motor does not have to get soaked from the fuel that is leaking. Next I decided to go a Feb 18, 2009 · YAMAHA ATV Raptor 66O. At this point, I do not believe it's carb. so a couple of weeks ago i posted that my 650 01' vstar classic was leaking gas out of the carb overflow. My brother bought t Apr 08, 2015 · That is why I T the breather tube into the overflow, so now the fuel leaks from the overflow hole (on the bottom of the bike, you can see the second picture of the attachment), muddy everytime after my riding. she fired right up and ran flawlessly after a long winter. then go into your carb and clean it, sounds like a sticky float. B. The fuel level is set too high. (I think this is to keep the gas from instead overflowing into the engine. Tutorial Do it Yourself - 1978 Honda XL75 in video. just a lot of gas is coming out. Jun 12, 2018 · Once fuel has entered the carburetor, the level is controlled by a float acting on a tapered needle valve. Jun 17, 2010 · Fuel Leak from fitting - Harley Davidson Community . This happened to mine and the gasket in the petcock fell apart and little pieces of rubber from it would hold the fuel flow neddle open allowing the gas to overflow out the tube on the carb. Nov 03, 2019 · Gas leaking out of the dirt bike is a symptom of a bad seal or gasket. The problem with it is that it starts, but once I give it gas it stalls. Once this occurs the bike stalls and gas leaks out of the carb for about 10 So my 2005 foreman 500 is dripping gas from the carb overflow. This created a drain, so that gas would run out the overflow hoses onto the ground whenever I filled up the tank. Im guessing the gas is coming from the overflow hose on the carb. holding the float up with your finger and see if it leaks. Also, make sure that the fuel lines are properly routed. Aug 30, 2014 · Gas leaking out overflow tube as soon as petcock turned on fuel running out of overflow tube,running or not As soon as turn petcock on fuel leaks out of overflow tube,lots Posted by Jeff Dignard on Jun 10, 2014 When the fuel is turned on gas starts coming out of the overflow tube. I've been having gas leaking from a '08 Scrambler 500 that's been siting around, coming out of the overflow tube. It is a tube that comes directly out of the gas tank and the tube just hangs at the bottom of the bike. I did put new tires on a Sun heats tank, gas get hot, gas expands, and runs out of overflow tube. I put a new OEM carb on my 2006 fourtrax 350tm last year. I was hoping it would just recycle and still vent through the standard tube in the right side (behind the middle box). Vacuum leaks occur between the cylinder head and carburetor slide/butterfly, where the low pressure will draw in air through the leak area. Feb 09, 2009 · If you're getting fuel out the overflow tube on the carb, you could have debris from the tank stuck in the needle and seat area in the float bowl keeping it open a bit. If it is leaking that much, you most likely need to replace the fuel tap, also known as a petcock. why is it leaking? the bike is flooded and it is on the center kickstand so leaning is not the issue Jul 19, 2008 · Hello guys and girls, I hope you can help me with something. So if the needle is not sealing completely the fuel will keep filling the bowl and run over into the overflow tube and on to the floor. Also, don't smoke around a bike that's dripping gas. Fuel coming out of the vent on a carb means you are getting too much fuel into the bowl. For no-start- does it have a vacuum petcock? Jul 05, 2020 · Hey trying to troubleshoot my friends 2006 venture. The open end of the tube that's leaking gas looks as though it was connected to something because it is flared out as though it had something inserted into it. 08-15-2010, 10:29 AM. Dec 09, 2009 · the hose that is draining fuel is a hose that is an overflow tube from the inside. Oct 17, 2014 · If fuel is leaking from the carb, it can potentially cause a serious problem – fire. I did put a fuel Late model 550K and 550F gas tank overflow/drain tube « on: August 27, 2019, 02:46:02 am » On the late model K and the F model tanks with the flip up fuel door there is an overflow or spill drain tube. Dr. I have a 1999 yamaha zuma 50cc I have cleaned the carbs 3 times and bought a new petcock, float and needle valve. In a working system: As fluid fills the bowl, the float rises, and a needle plugs the hole through which gas was entering the bowl. I did find one thread on another forum that there is a tube that runs inside the tank and comes connects to the fuel inlet baffle and there could be a crack It's simple. This forces gas out of the sides of the bowl. Another reason is the carb bowl drain screw oring, typically unless you have loosened this screw, then the float needle valve would be the issue here. Others have an air adjusting screw. I think I'll wait to mess with the fuel screw until it's a little cooler outside. XL 75 XR75 small engine walk through dirtbike Jul 26, 2009 · HI. Discussion in 'Sportster Models' started by corney, Feb 27, 2011. XR650R. The most common reasons for a dirt bike leaking coolant from the overflow tube are: There is too much pressure in the cooling system to hold the fluid So yesterday and today while my bike was sitting in the sun gas was leaking at the rate of 1 drop every 2 seconds out of the overflow tube on the bottom of the bike. Im going rebuild my dads carb. Lower the carb into the bowl of gas as you gently blow thru the fuel line. You might have worn float needles depending on the age/mileage of the bike. This happens only when sitting, not nearly as bad or much at all when the bike is running. For that price you might as well buy a rebuild kit Aug 12, 2013 · Why is my motorcycle carb leaking fuel from bowl hose (not overflow), even when fuel is turned off!? I have a 1996 Yamaha DT200 with a 2 stroke oil injected engine. slogger, Oct 7, 2011 #1. Jun 22, 2012 · My 400 had gas leaks last year, I found all the fuel lines were cracked and either leaking or sucking air. 1 0 0. Now that the tanks half empty I shook the bike side to side thinking maybe a stuck float and gas began trickling out of the tube again. - Motorcycle Jetting & Fuel Injection - ThumperTalk Fuel is dumping out of the overflow tube when the bike is standing straight up and when leaned over on the kickstand. ) Hopefully someone with more knowledge of your exact carb can chime in here, but I would start by opening up the carb to check if the float and/or float If the gas is leaking through the drain tube, then this could also be coming from the overflow tube in the carb. It might need to be replaced. If it does the best remedy is to replace it although some folks have found creative ways to repair them. Just fired up my motorcycle after 3 years in storage. Fortunately, gas leaks can be easily detected with their distinctive smell and fumes. You might have a piece of grit in the needle seat preventing it from sealing completely, and/or the float level could be set too high allowing a fuel level high enough to overflow. Gas overflowing out of the bowls usually means that the float is stuck or the valve that shuts off the gas flow when the bowl is full is unable to close. After double checking the float height and if it still floats, I determined it might be the float valve. Bike flooded, fail. Dec 11, 2018 · My dads 03 kodiak 400 does same thing. I am currently still leaking gas and pretty bad after shutdown i leak about as much gas as the diameter of a basketball. Some call it the breather tube. Reply 1  9 May 2015 This video shows a fuel leak on the Direct Bike DB50QT-32A that appears to be coming from the overflow pipe. Now here comes the real issue. Gas leaks badly out of the carburetor overflow tube and out of the bottom of the carburetor. When I placed everything back I noticed fuel leaking. Could be a drip. One other leak that’s also common on most Harleys is the dreaded wet-sump, when oil collects in the crankcase. Any help would be appreciated. So it will never NOT leak so long as any gas is in the bowl. If it continues to leak, could be sticking and need a good cleaning. It starts and runs like new, but when I shut the motor off it drips fuel out of the overflow from the vapor separator tank until pressure is off the system. Unhook the hose from the petcock to the carbs and see if fuel is seeping from the petcock when in the off position. One of the tubes is the overflow exit. While it's a problem that should be dealt with immediately,  2 Oct 2014 Tried to push start it, did not work, gas came leaking out of the overflow tube for the gas tank. All of these parts can easily be fixed by some handy tools and no expert work required for this work or any engine work. I think you're right. Was wondering if this could be the petcock going bad or just a carb problem? Thanks in advance!!! Gas leaks around the air filter usually indicate problems with valves inside your engine and how it is processing gas. Remove the fuel tank vent from the end of the vent tube (pull gently from both sides). By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. ( guessing its a overflow tube) Its doing this both running and not running and it runs good. Joined: Nov 18, 2005 My S&S Super E is spewing fuel from the overflow tube. Not good. The location of the fuel tap varies, but it will always be at the opposite end of the fuel line you have removed. You can try tapping on the carb body with a hammer. If you are leaving it ON, or it's staying ON even though you've turned it OFF, it can cause the overflow issues like mine had. It operates by opening and closing a diaphragm by vacuum. Nov 26, 2009 · Very likely the seal ring on your gas cap is not seating along the entire perimeter. 3. You need to open up the carb float bowls and look at what is going on in there. The other time it leaked fuel it was leaking from the air filterbut I realized that my overflow tube was all kinked in a spot so I'm assuming that the overflow tube wasn't able to let that fuel flow out and that is what was causing it to leak out of the filter. I loaded it in the back of my truck and to keep it from leaking all over my bed it plugged the hose with a golf tee. Store any motorcycle or ATV long enough & you will end up with a leaking fuel valve. Shifter, Jun 8, 2010 #2. A vacuum leak is caused by extra air introduced into the fuel/air mix produced by the carburetors, which will lean out the mixture and cause poor running conditions. Oh, and it's 2002 Rubicone 4 trax. If it looks different than the others it means that you have an accelerator pump on it. It is very clean with very little use. The good news is that it's a LOT quicker getting the carb out the second time. These floats could be dirty and stuck telling the Jul 27, 2014 · Alternately, besides the leaking petcock, the overflow tube in whichever carb is leaking may have a crack as described instead of a bad float valve. It has a built in pressure release valve which directs overflow down a tube and empties under the bike. Open the fuel tap on the motorcycle gas tank by turning the lever to the "on" position, and let all the fuel drain into the can. it will also stall after about 20 seconds of idling. The most common malfunction is a leaky valve (the float pushes up but the valve doesn't close completely). Try using "Seal-All" - you don't have to mix anything and it works great for patching fuel tank leaks. Apr 04, 2011 · The gas typically overflows from the carburetor overflow tube, when the float needle valve is sticking in the down position. An engine in good condition will have very little blowby gas venting, whereas a badly worn engine will have a lot of blowby. Discussion in 'Thumpers' started by slogger, Oct 7, 2011. This is important if Also, don't smoke around a bike that's dripping gas. A fuel leak should not be ignored, so as soon as you notice these signs, it is time to make an appointment with a mechanic right away. This is important, since some fuel leaks out the overflow, and some makes it into the cylinder, past the rings, and into the crankcase. A stream of oil, flowing from the engine's breather tube and into your motorcycle's air box, is the result of a condition called blow-by. Apr 09, 2011 · Carburetor leakage, especially significant leaking while the bike is running, can have a dangerous and damaging effect on your bike. Most filler necks are made of rubber or metal, which can corrode and wear out over time and leak fuel. glider, Feb 8, 2009 #2 To check the level, screw the tool in, have the bike sitting level (on centre stand) and hold the tube up to the side of the bowl you are working with. IF the carb is working correctly, it cannot overflow by leaving the petcock on. As soon as I turn the gas to on or reserve it just starts pouring out of the drain tube. #12 Fuel Shut Off Switch Failure. Its not the overflow tube like I have read over and over doing research on my issue. Looking at the tubes coming from the tank, they're all hooked up and not leaking. Parts built to Last, Bikes built to ride. First remove the carb and remove the fuel bowl. Another common cause is the use of fuel containing any Ethanol. Jun 09, 2009 · I have taken the carb off 4 different times, cleaned it and I still have a fuel leak out of the drain tube. If it was and you stood it up, some fuel might have come out of the vent tube. It has the smell of gas, but has the tint and texture of oil. Turn the gas to on and Pull the prime hose off the carb and see if there's gas in the line. Dec 07, 2016 · If you are riding your motorcycle and notice a fuel leak, park the motorcycle immediately! Turn the fuel shut off valve to the off position and make sure the area is well ventilated. Jan 20, 2017 · Apart from being a severe safety hazard, gas leak from a motorcycle leads to decreased mileage, increased fuel consumption and wastage of gas as well. While you have the float bowl off you can turn on the gas while. Usually you can tap the float bowl with a screwdriver and unstick it, but if it happens again, overhaul the carbs. Mar 01, 2010 · That is what it is, an overflow. Same overflow tube. Here is my problem. Put it back together and it was ok. The first step in fixing this problem is to identify the source of the leak. If the fuel shut-off solenoid is leaking, replace it. To correct the problem of leaking gas from the carb overflow during running and after shutdown. It is leaking fuel from somewhere under the gas tank. It is a slant head with the carburater that is mounted closer to the engine. This will, sooner or later, blow up your engine ! If a full tank of gas in the evening turns into a half tank by morning, check your oil. That's not the original tank btw, which is probably neither here nor there. Page 1 of 3 1 2 3 Next > 01 Night Train Member. Some reading tells me common problems are dry o-rings or gummed up carbs causing them to overflow. Only does it if the bike is idling or not running. I have cleaned the carb, checked the float level via Tech Tips on the site and it still wants to leak. And I'm assuming it's the fuel tube as that's what's coming out. Some switches have failed to cut off the fuel supply It is normal for fuel to leak if its tipped too far over if the float is high, i had a bike which over time leant further and further on the stand until it started to leak. Not the CA. the bike is a 2008 cbr600rr, w/5000 miles. The reason I bought it was because the original one was leaking gas out the overflow. Crud can get stuck in there and cause the float needle to NOT seat properly causing gas to constantly flow into the float bowl. Make sure that the gas line which goes from the bottom of the gas tank to the side of the carburetor is not split. A few days ago I changed my air filter (Honda NTV Revere 1990) which is under my fuel tank. We haven't been able to find what this tube connects to, or if it's supposed to be connected at all. All older Harleys and some new ones locate the oil in a tank that is higher than the bottom of the engine cases. The carbs have hoses that gas will leak from if there is a problem with them. Need help. I just purchased the bike 1998 FLHTCU Electra Glide Ultra Deluxe, which had been sitting in the blokes garage while he was riding his Fat Boy. The petcock didn't have a good seal inside, so even with the petcock "off," gas was continuing to flow into the carb and overflowed the carb. To cure this, service and/or rebuild the carbruetors. leave a good size spot on the floor. Unless it's equipped with the independent Bing floats which don't have the overflow tube. clean the fuel flow hose all the way through the fuel flow needle inside the Feb 09, 2017 · 'Carbs' as they are known do have their problems and dribbling out petrol from their overflow pipe is a common issue, especially if the engine hasn't been started for a while & the carb is a few Oct 12, 2016 · If the gas cap is not venting correctly the unit could be vapor locking and be causing this problem. It starts easily. It's worrisome that the rubber tube is leaking onto the hot exhaust pipes too. Remember that the gas cap is vented so if you accelerate rapidly or make rapid right turns, a full tank can send gas out to the top of the fill tube and then out the gas cap. Jun 11, 2015 · I recently tried connecting the overflow to a second vent i had drilled into the left side of the carb. Won't restart. So, I changed the float valve. In addition, inspect the fuel shut off lines for cracks or tiny holes. leave the hose in a container and see if gas ever leaks outa faulty petcock will cause gas to come out the overflow tube. 8 May 2016 Common fuel leaks from a Harley carburetor. A little Seafoam or fuel system cleaner won't hurt, but may not be needed. A leaky petcock won't give you many fits while riding other than drip fuel out of the flood tube and end your day faster. The fuel line I use is the yellow transparent line 3/16 OD x 3/32 ID. I had this problem  Normally there is a drain hose attached to it. This prevent spillage onto your paint under the fuel door. ok i got gas in the new tank! cams went in and work perfect, although i need to make a small timing adjustmant. There is another possibility but very doubtful as I've only seen it happen on the little Mikuni carbs where the float bowl drain which has an "overflow tube" attached get's over tightened and leaks a bit. That should dissolve any crud on the float needle and in the lower part of the carb. Carb leaking fuel? How to clean motorcycle Mar 03, 2014 · I bought my 2002 xr400 last December and it was leaking gas from the overflow tube(s). If the carburetor is cracked, it will leak fuel. Anyways I brought her home, filled the tank up and she starting spewing fuel from the overflow. When it is running, gas pours out the tube . On the carb, there is the hose that connects to the gas tank on/off, then there is two sets of two thinner hoses, and i think one more. Worn or stuck float valves are very common following prolonged storage or when gasoline has been allowed to sit inside the carburetor and begins to lacquer with age. While it's a It's rare but sometimes the bowl overflow is cracked or leaking I would take the bowl and fill with fuel and see if it leaks on its own without the level above the overflow you could also plug the overflow and with the carb out of the bike and see if the carb truly overflows which would indicate a failure for the needle valve to seat or a float issue if not there's something wrong with the Apr 15, 2012 · Remember to test the fuel petcock. If fuel gets into the engine it will thin out the engine oil, ruining it's ability to lubricate. I bought a new engine off ebay. I have an older 1978 Honda Hawk CB400A. The other solution is to redo the venting system so that the venting doesn't go out of the gas cap Oct 14, 2013 · Edit: as for fuel leaking onto hot headers. So I cleaned the carbs and replaced battery and old fuel. If the main body of the carburetor is leaking, you will most likely need to replace the carburetor. If leaving the gas cap off for 5 to 7 minutes does not solve the problem then go to the next step. 50 HCP3458SET8 OEM Mikuni fuel line Tube O-Ring, set of 8: $ 26. corney New Member. Dec 28, 2012 · i have a 1981 kawasaki kz440 ltd that im working on, the right side overflow tube is constantly leaking while the left is not. This happens when the inlet needle becomes dirty/defective or the float get damaged/out of adjustment. All the air vents are free. Fuel leaking out of overflow. Greetings to all. t. The other is the vent tube from the evaporative canister; the buzz you here is the purge solenoid. Drain any excess fuel from the tank before servicing the unit. – Ari Oct 24 '15 at 14:06 The problem can most likely be found between the fuel pump and the injectors. I thought maybe a little piece of dirt might have gotten in the carb so i pulled it all apart and cleaned everything. Jan 07, 2012 · The carb isn't really meant to prevent fuel leaks, the shut off valve does that. So the fuel flow is only controlled by the float. Oil is leaking fairly substantially from the overflow tube. 73 Kawasaki Z1. Mar 14, 2012 · In place of the original hose clamps, the PO used twisted wire to hold the hoses on the fuel cap assembly. Why is your carb overflowing? Check your fuelcock. On most bikes the carb has an overflow port that drains through a tube to the ground. Cram/jam/thread/manipulate a 6" (give or take) piece of the clear tubing into the drain hole and hold the other end up alongside the carb bowl (so that the tubing is vertical). When things get hot the gas begins to leak out of this connection - where the fuel line goes inside the tank. On Cal emission models do not top off the fuel tank or when it purges it can drip fuel through the overflow tube. That's a common ocurrence on start-up after sitting for a while. Have put it back together and it starts! That’s the good news. Turning this screw clockwise will reduce the amount of air entering the carburetor, and will, therefore, richen the mixture (refer to a shop manual for correct settings). It could also be either the fuel regulator or in the return line, if so equipped. Short of replacing the entire carburetor can anyone reccommend something else to try. Some times these tubes develop crack/splits down the sides. so when i started the bike and let it run for a min. Always handle fuel My bike has sat about a week and when I started it up it started leaking gas from the overflow tube on the bottom of the carb. If the fuel is actually making it to the top of the overflow then you have a float issue or the float/seat is not sealing. Remove the tank and the gas from the tank. In order to fix the problem, you need to understand what causes the leak in the first place. A stuck float valve will cause your overflow tube to drip gas when the petcock is on. #11 Leaking Coolant Reserve Tank. Thanks for the info Allen, Here is the history of the bike; Pretty sure my uncle bought it new. Read below to learn what specifically could be causing your lawn mower and small engines to leak gas through the vent tube and air filter. After some time I found out that my overflow drain hose is spitting out drops of fuel Apr 01, 2010 · Roxie, (hot name!) This is a simple problem - The tank vent is stopped up from sitting with bad gas and needs to be cleaned or replaced. 07 HD CVO Ultra Classic. that will let you be able to turn the gas on or off. Use a bike cover or park in the shade. Bad news is it won’t idle or run for more than ~ a minute. Extremely lean mixtures caused by air leaks produce excessive HC (hydrocarbons), and such vehicles almost always fail an emission control test. The cable may be getting trapped fully open is the only other thing I can think of. all along that edge there's a lighter pattern in the gasket. Fuel petcock is off and fuel still drips out overflow hose. Allright when I first bought the quad it leaked fuel out the overflow tube and throttled itself up WILDLY in idle. Replace the fuelcock would be the way to go. Last known maintenance was an oil change, but I noticed the leak before that. Wipe up any fuel with rags, and lay them outside to dry so the fuel can evaporate. Jun 08, 2010 · gas dripping from drain tube on victory, gas fumes coming from tube on my motorcycle victory highball, how install gas hose on 2016 victory motorcycle, how to drain gas out of a victory hammer, overfilling gas tank on victory motorcycle, victory cross country drain tube, victory hammer rubber oil hose, victory motorcycle fuel overfill, There is no overflow hose on either gas tanks or carbs. Changed the oil and replaced the fuel in the tank. May 30, 2012 · But if you choose to ignore the problem, it will only get worse. There's a small rubber ring on top of the tank where the cap overflow plugs into when closed which is probably damaged and needs to be replaced. Feb 27, 2012 · - if it's ur overflow tube then turn off the gas at the petcock. Drain the fuel. Some of the most common causes for a dirt bike to leak gas are for a damages fuel switch, the carburetor overflow, the fuel bowl, or the carburetor drain screw. Is this something that is normal, perhaps the pressure relief in After fighting with other issues, the bike ('73 CB500) was finally in good shape, then it started leaking gas out of the #2 carb overflow. Sportsman 500 Carburetor Needle And Seat Quad Logic 2001 scrambler 500 carb leaking polaris atv forum 2001 scrambler 500 carb leaking polaris atv forum polaris fuel leak repair you 2001 scrambler 500 carb leaking atvconnection com atv enthusiast May 26, 2020 · The overflow pipe starts at the hole at the filler cap, runs through the top tank and comes out at the bootom of the top tank at the rear. This condition occurs when someone has bent the float tang as mentioned above. Also if the air filter is over saturated with oil it will also drain out the airbox hose. the inside of the carb has a opening just above the float level that is fuel gets that high, instead of fuel overflowing into your engine or flooding the engine it will drain out. Swapped a carb from a good running scooter and have same results. Aug 16, 2009 · The bike is an 07 TE 510 with the JD Jet Kit. The last 5 that i just described, are those the overflow? I took the carb apart, the float assembly all looks fine. 557s Best 1/4 MPH 108. But, the gas is dripping severly out of that tube. zach0199. Fill a shallow bowl with gasoline. After stripping the float valve out  7 Dec 2016 And one of the more common issues motorcycle riders may encounter is a fuel leak. Apr 06, 2008 · there are drain or overflow lines coming off the carb(s) and leading to the ground just behind the motor. And one of the more common issues motorcycle riders may encounter is a fuel leak. It probaby is a stuck, dirty or bad float needle. Typically, on a generic across-the-frame metric engine, there is a rubber intake “boot” that moves fuel from the injector unit or carburetor into the cylinder head. If your bowls don't have small tubes as overflows get rid of that junk and get original bowls and floats or the latest alcohol resistant type and bowls with overflow tubes. 59 Why is fuel inside your engine bad? A leaking gas valve can do more than just waste gasoline. I cant post in the 2 stroke forum yet. The bike will start and run like there is nothing wrong. Discussion in 'Softail Models' started by 01 Night Train, Nov 20, 2009. Harleys are dry-sump bikes, meaning the oil is stored remotely and pumped in. It is at the base of the fuel tank, and cuts off the flow of fuel when the engine is not running. Its purpose is to ventilate combustion gas that gets past the piston rings when the engine is running. It was running fine and then all of the sudden it started purging fuel from what I believe is the breather tube on the carb. If I turn the petcock off it still leaks. It's the overflow tube. So I ordered the replacement quick disconnect because you cannot buy just the o-ring, but then I found that you can use a tranny or oil plug o-ring, I was think maybe just to start the bike after putting new cams in it would get me by. It now has a hole in it, halfway down its length. If this level is way too high, gas can leak out the carb overflow tube or into the engine. Caused by an increase of pressure within a motorcycle's engine, this phenomenon forces oil up into the breather tube attached to the crankcase. Any ideas on how I can fix this? Typically a carb overflowing gas is due to a float sinking. I put a couple of floats and needle valve in it, polished the seat, and still couldn't get the thing to stop draining gas. Step 5 Rough up, or scratch, the metal surface around the leak with fine sandpaper. At worst, fuel fills the cylinder, eliminates compression and prevents the piston from moving. Do any of the thin hoses connect to anything? The Clymers wasnt real specific in this case. Jun 18, 2012 · Carburetor Fuel Overflow Tube Replacement 1986 Motorcycle(s): 2010 Ninjette, 98 CBR600, 98 VFR800, 2000 BMW R1100RS, Kymco Movie 150 the left line was leaking Save on Dorman - Help Radiator Overflow Tube Repair Kit 10691 at Advance Auto Parts. CVP Velocity Emulsion Tube for Harley Carburetors common questions we get concerns either the overwhelming smell of gas coming from the carburetor or fuel leaking out of the bowl or overflow. As I noticed I am using way more gas than usual and there was gas odor, th Stack Exchange Network Stack Exchange network consists of 176 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I usually buff the needle body smooth so it moves freely. Usually the gasoline fills the carburetor bowl up to a certain level and then the carburetor float will lift the needle and close the valve so no more fuel will come i I'm pretty sure it's fuel leaking out of my overflow tube. I took the float and float valve out of another XR I had but its still leaking. To adjust the levels, the bowls do have to be removed. Not when I turn out the petcock gas starts pouring out the overflow tube even when the bike is level. Any fuel above the hole will leak out. Mar 24, 2012 · With the bowl off, put a piece of fuel line on the carb. Tends to happen somewhat more often when they sit for long periods of time, like winter. Sent from my iPhone using Tapatalk May 16, 2010 · Looks like the fuel bowl overflow tube that we have on Harley carbs. Also, if your gas tank is overfilled or on a hot day, sometimes gas can come out of that overflow tube as well. The engine has a caburetor (not fuel injected). 13 Apr 2017 On most bikes the carb has an overflow port that drains through a tube to the ground. When I started it again today same thing. A fuel leak is when gasoline leaks from the gas tank of the vehicle. These tanks crack frequently where the lower hose connects to the lower connection on the tank. Apr 05, 2013 · gas leaking from overflow tube after cannister removal hey guys need some help, i bought a new 2010 Tuono a month ago and within 500 miles put a set of Arrow mufflers on it and removed the charcoal cannister. It's a temporary fix though. That will sometimes jar the float needle back into position. Even a little fuel in the oil ruins it. Got a new carb for the 185S and no matter what I do it leaks gas out the bottom drain tube. They said a If it leaks only after you stop the motor and it sits, it is quite possible your leak is either in the overflow tank (a cracked plastic bottle in the picture above) or a crack in the hose to the overflow tank (the thin hose snaking from upper right to just under the water pump in the second picture from the top). Check the tank carefully and scrape only with wood or hard plastic/fiberglass stick gently to not nick the contact surface. Then connect to rubber lines that exit at the bottom of the bike. well i broke it down cleaned the carbs used seafoam and everything was fine for a bitso im drivin home from work and i lose power goin about 70 i am slowly slowing down and my exhaust sounds muffled, there is no response when i put on My bike is leaking gas from the overflow like a mofo. You can confirm this by disconnecting the outlets and see if anything dribbles out with it shut off. I am working on my Also since it seems like only the one side is draining check your #2 carb. I found an overflow tube coming from the top of the carve has gas streaming from it and I can't keep it running. Underneath the car will be a spot of fuel on the pavement, along with the strong smell of gasoline. Also pop those bowls off and check the jets for any dirt. I remember people guessing that it was done that way so the fuel would vaporize and be blown away in the breeze instead of forming a puddle on the ground. Nov 07, 2014 · So I finally had a chance to play with this new/used bike and after filling the gas tank and going for a short ride, I was surprised to see fuel was pouring out of the overflow tube leading from the carb float bowl, leaving fuel streaks on the driveway. Take some Brasso or other metal polish, and polish out the corrosion inside the cavity the needle body slides up and down in. For fuel out the overflow - fuel cap isn't tight? Gas sloshing in the full tank? Don't mess with push starting if you aren't really sure it'll start. Both tubes exit the bottom rear portion of the tank. I tried tapping the carb with a piece of wood in case it was a stuck float, and this didnt help. There maybe some dryed funk in the float bowl needle and seat or float hinge, that's allowing gas to leak by, over filling the bowl and running out the overflow tube. It means that the needle valve in the fuel bowel is stuck in the open position. There should be no ignition sources or open flames in the area. Aug 04, 2018 · Some carburetors have a slow speed fuel adjusting screw that regulates the fuel/air mixture in the lower rpm range. We didn't put fuel in the bike unless we we're ready to ride. Most carbs have a replaceable seat - the Bayou does not - SHAME on kawasaki!! I recently installed an aftermarket carb purchased from Ebay for about $150. Edited December 15, 2018 by Bills03400 Over time, the carburetor may develop cracks due to the vibration and heat of the engine. It is a vent line, and if you are getting gas out of it you have a problem. The only explanation I could see is that the gas was leaking inside the frame and then flowed down towards the front of the frame where it leaked out. And with a hose you can direct the gas splash to a catch tank to keep it off the ground. This also results in the float needle allowing fuel to pass into the float bowl unabated. It leaks gas out of carb overflow tube which comes from left side carbs alot! Took carbs out looked at floats measured, looked at seats see to look and work well. - if your petcock valve is leaking, drain all of the gas out of the tank, remove the petcock and clean, you should also inspect the rubber seals bc they may need to be replaced if your leaking around the petcock. American Honda Motor Company is recalling several outboard motors for boats, saying fuel overflows from the vapor separator air vent tube. Apr 26, 2010 · The fuel is coming from an overflow that drains the excess fuel from the carb. The first solution is to not fill the tank so much except on trips. If coming from the float bowl gasket, simply remove the float bowl and replace the gasket. The common places that a dirt bike will leak gas is out of the fuel switch, the carburetor overflow, the fuel bowl, or the carburetor drain screw. Also, if you want to add fuel system cleaner, you have to use the white plastic filler funnel that is clipped to your spare tire cover in the trunk Otherwise you will dump the entire bottle on the ground. Gas will cause the oil on the air filter to thin out a little. Cheers, WCH Hello, I have a 2002 KDX 220 that I just bought and have been upgrading to my taste (power). Mar 31, 2013 · gas coming out of overflow tube @carb my sons 2006 TTR50 has gas coming out of the tube from the carb. Inspect the carburetor for cracks or corrosion. To fix this all I did was turn the gas line off at the tank-mounted petcock, and drain the float bowls by undoing the drain screw at the bottom of each bowl. Took it for a ride, and as soon as I stopped it started doing it again. There may well be quiet a difference between the two carbsafter all they are 16 years apart and the Japs love to make slight changes. 15 Jan 2012 my xr100 leaks out the overflow tube, this helped a ton thank you! Read more. This year I had gas leaking again and I couldn't keep it running. w. From diagrams I have looked at this is probably due to a float sticking or maybe some debris in the VRT. 2) Leaking float valve seat o-ring - cracked, worn, or debris stuck under it prior to tightening. Install it on your bike and it leaks too. First day the tank was about 3/4 full and today about half full. Mar 12, 2008 · Although the bowl overflow o-rings are not quite the same size as the connector pipe o-rings, the same ones will work for both applications: HCP3458 OEM Mikuni fuel line Tube O-Ring, each: $ 3. All was good until i went down a steep hill. And vent tube on on the right side of the filler neck. May 23, 2019 · Honda TMX 155 leaks fuel from the overflow tube Hi, Kenneth and the usual suspects are: 1. the leak OR if it is the overflow tube. Jul 11, 2008 · Turn off your gas and drain the #2 carb. Was running great then started leaking fuel from overflow tube from the bottom of carb and died. You might be 2 miles down the road and downhill before you give up. I allready bent the tab on the float up to try and better seat the rubber tipped stopper needle. It is one of the things we have to endure to ride the best motorcycle in the world. . Jan 15, 2012 · Your carburetor is leaking gas. Sounds like float level and/or leaking float needle valve. Rarely there is a leak from the area of the metal pipe the goes into the side of the carburetor; this is where the fuel hose pushes onto. Good compression, valves adjusted, good spark, drained and added fresh gas. Gas leaks mean frequent fuel stops and more gas usage. Nov 07, 2014 · If the petcock has "prime" position, check to make sure it is not leaking out that port. Turn on the gas and watch to see how high up the tubing the fuel flows. I figured I'd rebuild the carb, set the float height, replaced all the jets, needle & seat, etc. When fuel reaches a level higher than the tip of the tube, fuel flows into the hole at the tip and out the overflow drain. (closer than the last engine I had) But anyways, I built the bike. Then disconnect the fuel hose and squirt some aerosol carburetor cleaner into the fuel hose to fill up the float bowl again. model. The type of carb leakage described in this video will typically You can connect a rubber tube to the overflow nipple, fill the bowl with water, put finger over the open end of the brass overflow tube and blow in the rubber end and look for bubbles. There is an overflow tube, which you took a photo of. Then, as fluid from the bowl is used, the floats sink a little, the plug falls to a lower level and stops plugging, more gas enters, the float level raises, and the cycle continues until gas is no longer being used. If the bike has been sitting up over the winter your floats(in the carbs) could be stuck and when you start or try to start the bike it keeps pumping fuel in until the float gets to it's maximum height preventing any more flow until needed. If it does, you'll probably need to find out what kind of carb you have there and get some sort of manual for it to see what would cause fuel to flow out of that hose. However, if as you say the petcock is closed with the leak, then it isn't shutting off. Whatever it causing this, because the flow of gas isn't stopping, it will leak out the carb through the overflow tube. Aug 01, 2012 · In your case, one of both of those mechanisms is not working properly and is allowing the fuel level to raise up to overflow the bowls and mess up the mix (way too rich). Put back together and still does same thing. I could not find a loose hose laying around so I am wondering if it is suppose to have a Won't hurt to try. When you let the bike idle in your garage, heat from the engine caused pressure to rise in the tank which could only be vented through the carburetor overflow tube because the tank vent isn't doing the job. When I changed the float valve it stopped the leak for a month or two but now its back. A fuel leak, starting from the carburetor's vent tube, can be worrisome affair for many motorcyclists. Locate the fuel tube containing the fuel tank vent and gently pull the vent assembly away from the pocket behind the engine cover. Show less. I had gasoline leak out of overflow tube. I have two sets of CB350 carburetors where all four of the float bowls have hairline cracks in the brass overflow tube. He passed away about 38 years ago. or so, gas started leaking out from my overflow tube at the Sep 16, 2012 · I have a 2005 Honda Rancher 350 2x4, It has a fuel leak coming out of the carb, at the bottom of the carb is a nipple with no hose to it and whenever the fuel is on the fuel runs right out of that nipple. 2. I noticed a stain in my drive way after taking a break from riding. Check the float needle. Jul 17, 2017 · Fuel Tank Problems Often the fuel cap is the source of a lot of leaks, and even though the fuel may look like it's leaking from somewhere else, the cap is to blame as it's flinging fuel around from the engine vibrations. Oct 31, 2004 · Gas was dripping from between the carbs somewhere and gas was entering the air filter housing and leaking down the air box drain tube down by my right foot. Hello Ken, I have a 2006 883 sportster and I recently replace the main jet to a 175, pilot jet to a 44 and added the EZ-Just Mixture Screw since I changed the stock air filter for a screamin eagle air cleaner and Vance & Hines shortshots pipes, the problem that the bike has is that every time that I ride for a long time gasoline will start leaking from the air filter so far I have cleaned the To answer your question, yes the end of the vent line was higher than the gas tank and I discovered that the dripping gas was NOT coming out of the end of that line. is it possible that there's enough pressure in that bowl that the gas could Leaking gas from overflow tube. May 07, 2018 · The tube shown in the picture below is leaking fuel when the engine runs. Dellorto carbs don't have an overflow and don't seem to flood. Once the petcock is "off" you'll notice gas leaking out of the face of the petcock. If it has any dirt or crud it will have to be cleaned. Needless to say, the hoses broken at the fuel cap, and fell down into the tank. Stack Exchange network consists of 177 Q&A communities including Stack Overflow, motorcycle fuel-system leak suzuki Gas leaking from this tube,wondering what Making VERY small adjustments to it will eliminate the problem IF it is not from crap in the carb. Buy online, pick up in-store in 30 minutes. And the overflow condition occurs when the needle valve doesn't seat cleanly in its seat. Now I have the same problem with the new carb. Another posibility is the carb float might be sticking just a little, jostled around it might have set again and stopped the carb from overflowing. This is important if the float sticks. Here is what I have tried so far: 1. Put a buch of ice cubes in the tank and shake it and shake it to remove any crud and then flush it out Dec 28, 2008 · The hose is used on better tanks equiped with non vent caps to direct any gas spalshover. May 27, 2008 · I read if you leave the fuel on, gas will overflow past the carb and into your engine and ruin your oil or even hydrolock the engine. Like someone else mentioned the oil leak you see may be from your tip over, but I am inclined to think that your tip over may have resulted in a little fuel running into the airbox as well. So you buy a used one off the shelf at a salvage yard. You have corrosion inside the cavity that the needle sits in, an the needle is not moving freely, so it gets stuck. If the fuel height is too high but the bike is running, the engine will have a tendency to display a rich running condition, which will make the throttle response slow and the engine note muffled. All the gas goes into the 2nd carb then drains to the first and the accelerator pump then pumps to the 3rd and 4th. This pretty much stopped the throttling up in idle (I had to adjust the pilot screw and its pretty good now). The only thing I didn't replace was the little o-ring that was attached to the plastic float assembly, but it seemed ok. 🙁 Why? When bikes or quads are dismantled for storage the fluids must be drained from the tanks, carbs, etc. All was good for maybe 2 hrs of on and off riding. It leaks to. Aug 26, 2011 · My mikuni carb leaks gas pours out - Answered by a verified Motorcycle Mechanic We use cookies to give you the best possible experience on our website. Leaking gas from tube that comes out of the bottom of the right carburetor bowl. It is activated by . The overflow may be nothing. But when I started it, it would start with the choke pulled then cut out. The green coloured hose in the diagram above is attached to it. Vacuum leaks are very common in older motorcycles. Could be more. My carbs are both leaking from the overflow tube. Hello, I'm not sure how active this forum is but I have a question for the mechanics out there. Mala Ipsa Nova Psalm 144:1 Luke 22:36 '05 Carbed Night Train 111 rwhp, 112 rwtq Best 1/4 ET 12. That being said, you may have a bad overflow hose inside the tank. 00 View Full Version : Gas leaking from overflow tube when not running. Oct 18, 2015 · If your bowls have the overflow tubes make sure they are not clogged. I had this happen due to a leak in the petcock. could it be both of them are unplugged Tao tao t-3 80cc kit. I was happy, happy, happy. Jun 24, 2013 · Fuel leaks out of one of the hoses in my carb: Danistheman: 4-Stroke Dirt Bikes - Yamaha: 4: 12-16-2012 07:09 PM: Fuel Overflow from Carb: Dirtbug: 2-Stroke Dirt Bikes - Kawasaki: 2: 07-19-2012 03:15 PM: 09yz250 Leaking fuel from carb overflow hose when petcock is ''on'' 2009yz250: 2-Stroke Dirt Bikes - Yamaha: 10: 03-27-2010 08:50 PM: cr250 May 08, 2016 · Under severe conditions gas may soak the air filter or overflow out of the carburetor and onto the ground while parked. WARNING: Fuel and its vapors are extremely flammable and explosive. However, when sitting on the stand (leaning a bit) it will leak gas from the overflow tube on the carb. Damaged or restricted fuel tank venting system. your gas float is sticking in the carb- Well, no. Dolittle Experienced Member Contributor Retired Moderators. When trying to start, it pours gas out of the overflow tube and will If you take the float bowl OFF then you can fill it with gas and see if the drain screw is causing. Brand New ATC 185S Carb Leaking From Drain Tube Hey guys, new problem among many today. Apr 03, 2018 · Hi I recently bought a Honda shadow 750 which had been sitting for a few years. Change the oil before operating the engine. gas leaking from overflow tube motorcycle

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