Question about 1993 Suzuki VS 800 Intruder

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Gas is coming out of what looks like an overflow tube on the back carb

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Did you resently fill you tank

Posted on Nov 08, 2010

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Posted on Jan 02, 2017

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2 Answers

Problems with exhaust tube comeing from carburetor is leaking gas four wheeler dies with I open the throttle wide open


There is no "exhaust tube" on a carb. if you mean the overflow tube at the very bottom of the carb, then you need to disassemble the carb and clean here(and everywhere else too while you've got it apart) this will most likely fix all of your problems.
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Feb 13, 2015 | GAS Motorcycles

1 Answer

Gas leaking through overflow


Your carbs need cleaning and setting,, the needle and seats are what controls the flow of gas into the float bowls... the floats movement (up and down) regulate the movement (opening and closing) of the needle and seat

Dec 22, 2012 | 2007 Triumph Triumph Bonneville

1 Answer

1998 honda aero VT1100C3. Fuel leaking fromthe bottoom of the bike. There is a cylinder shaped object right under the bike that fuel if coming from or around it. What could that be?


Where exactly is it coming from. Easiest way is to clean up the bottom and try and follow it up. The carbs have hoses that gas will leak from if there is a problem with them. A stuck float valve will cause your overflow tube to drip gas when the petcock is on. Also, if your gas tank is overfilled or on a hot day, sometimes gas can come out of that overflow tube as well. Figure out exactly where it's coming from first. Or take a picture, that will help. If it is the carb overflow tube give the carbs a good whack with a plastic handled screwdriver (a big one) and that may release the stuck valve and allow it to do its job, which is closing off fuel. Other than that, the only other cylindrical thing I can think of would be the brake master cylinder, which would also drip a clear-ish liquid, that resembles gas, but doesn't evaporate at all. It is essentially hydraulic fluid. I hope this helps.

Bruno

Oct 20, 2010 | 2003 Suzuki VL 800 Volusia

1 Answer

Gas overflowing in carb. flowing out of the bottom tube


you might find that the needle isnt in properly check that first

Oct 24, 2009 | Yamaha YZ 125 Motorcycles

1 Answer

Fuel lines rotted, unsure of routing new ones


Bottom of the tank one is an overflow, 2 in the top are connected to the bulb
. The bulb pumps gas from the gas tank to the bowl of the carb then back to the fueltank in a loop to prime things up, prime too much and the overflow comes out the bottom tube.

Sep 23, 2009 | McCulloch 26cc Gas Blower Mcb3208

4 Answers

1975 yamaha DT 175 it floods when the gas tank


I had the same problem - actually more than one problem:
1) Floats in the carburetor bowl (at the bottom of the carb) are getting stuck. Remove the carb; carefully disassemble the bowl & float assembly (pay attention to gasket orientation and don't lose the needle valve that the float-tab presses on!); use a carb cleaner from AutoZone or similar, and a toothbrush to clean all the parts. If carb is not too dirty, leave the jets and mixture-adjust screws alone (otherwise will have to re-adjust later).

2) Overflow tube is plugged (hence fuel in the cylinder instead of on the ground). Clean both ends of the brass-looking tube from inside and outside the carb bowl. Make sure you can blow through it or it is still plugged. Toothbrush and carb cleaner should do the trick. Replace the short flexible tubing that connects to the overflow on the outside of the bowl - transparent polyurethane tubing is less than $1 per foot at your local ATV/motorcycle shop.

3) Air Vent tube is plugged. Same thing as the Overflow tube but mounted higher up in the carb (not in the bowl). Clean it the same way and replace the flex tubing with another short piece of polyurethane.

4) Make sure the float-tab and needle-valve move smoothly. Mine was catching and getting stuck so I carefully "polished" the face of the tab with 400-grit emery paper, and then made sure to clean the area from grit. Smooth as a hot knife through butter now.

5) Set the float level by CAREFULLY bending the tab that pushes on the needle valve. On my 1981 175MX, float height spec is 21mm when just making contact with the needle. Yours may be different though.

6) Reassemble the carb after making sure all dirt and debris are gone. Use a new bowl gasket or at least put a good gasket-sealer compound on the old gasket. Attach the short lengths of transparent polyurethane tubing to the Overflow and Air Vent. When installing the carb, the Air Vent tube should just be 2" long and point out to the side; the Overflow tube should route through the frame near the swing-arm and point down to the ground.

7) MAKE SURE the Oil Feed tube coming from the AutoLube oil pump is connected to the carb (brass-looking fitting toward the cylinder-end). I replaced mine with transparent polyurethane tubing (different size than the Air Vent and Overflow), so now I can see that oil is being presented to the carb!

8) If the carb was nasty-dirty, you may need a new air filter. Mine was disintegrating. I recommend also putting an in-line fuel filter between the petcock and the carb, again using short lengths of TRANSPARENT polyurethane tubing (so you can see that fuel is flowing). You may also need to adjust & prime the AutoLube oil pump.

I highly recommend getting a Clymer manual (check eBay) which shows all these procedures and gives you the right specs for float height, etc. based on your model / year.

Aug 11, 2009 | 1974 Yamaha DT 360

2 Answers

KDX200 carb float set up. Hi I have gas coming


If you have gas coming out of the overflow tube, you need to make sure the float valve is shutting the gas off properly. The float height would have to be awfully high to cause gas to come out the overflow. You might be able to do it on the bike but it's a lot easier to do off the bike. Pull out the float valve and inspect the tip. Make sure it is smooth with no evident nicks or deep grooves.

Apr 18, 2009 | 1998 kawasaki KDX 200

1 Answer

Gas leaking from hose that is under tank that is not for gas flow


is it an overflow from the carb? gas will only be in one of 2 tubes and they are the fuel line from the tank and the carb over flow. unless you have an electronic fuel pump then tubes go from tank to pump to carb. if its coming from the overflow then you are getting too much fuel into the carb float chamber. you may have a sticky float. thy getting some Berrymans B12 fuel additive and putting double the doseage in the tank. run engine til hot then leave it to stand overnight. this should break down any gum/varnish that has built up in the system

has this been in storage thru winter?

Apr 02, 2009 | 2001 Honda XR 250 R

1 Answer

Fuel leaking out the overflow tube...


The overflow tube coming out behind the swingarm? If that is where it is coming from sounds like your float in one of the carbs could be stuck.

Mar 29, 2009 | 1997 Suzuki TL 1000 S

1 Answer

Gas Leak via Overflow


The usual culprit is a blocked vent tube. Verify it's open. The usual indicator is either a pressure release when you open the gas cap, or a vacuum "sucking" noise when opening it first thing in the morning. On a carb equipped bike, the carb overflow lines will leak, but in a fuel injected bike like yours, it'll be out the overflow vent. The next time it begins leaking, open the gas cap. It should stop immediately as pressure inside is released. Good luck.

Nov 20, 2008 | 2005 Ducati Monster 1000S

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