small carb leak

[lilschmied]

I'm having an issue after breaking the bike out for the warm weather that a small drip of fuel puddles under the bike after parking it. I ran the bike with the air box open to watch and when i flip the kill switch fuel runs into the air box but I can't tell from where. It gets worse if I'm on a slight upward incline.

Petcock was rebuilt over the winter and a new inline filter was installed both are working properly. Bike runs fine down the road with no issues just when I shut it off it leaks.

Any suggestions?
Already tried seafoam to no avail.
Drained all the carbs and tapped on them with a rubber mallet.

[extreemthrottle]

might have a float needle hanging open.

[kawboy]

might have a float needle hanging open.

Yep. I would double-check petcock too.
With the engine off and petcock set to ON or RES, pull the fuel line from the petcock and make sure no fuel runs out.

[lilschmied]

Petcock definitely works had the tank off the bike with no leaks. anyone know a good way to try and free the needle up without completely disassembling the carbs?

[zlMark]

Petcock definitely works had the tank off the bike with no leaks. anyone know a good way to try and free the needle up without completely disassembling the carbs?Not really.

I do know that fuel saturated oil and hydraulic locking can destroy a motor. I wouldn't take chances

[furchin]

Don't take for granted that the petcock rebuild is good. Did you use a K&L rebuild kit? If so these have been proven to be a source of many a leak. The Flanged metal lip at the small o-ring is slightly larger than stock thus not allowing a comlete shut down of fuel. Your other problem is definatly a leaking thru float valve. Try drainging the fuel from the floats via the drain screws. With the drain screws open, crank the bike several times to pump gas throught the bowls. tighten the drain screws and refill the floats and see if this helps. If not maybe we can get together this saturday. I'm only 50 minutes from you. You can call me any evening between 6 and 9pm. get my number from my member profile.

[sharper]

Seafoam worked great for me, with only a minor problem. It was a cheap fix and apparently a good preventative maintenance for the future. Do you have fuel in your airbox?

[Overkill]

If your fuel petcock checks out ok the it definately sounds like a sticky float valve, check to see if that fuel appearing in the airbox is coming from one of the carb air ducts (realistically this is the only place it can be coming from the float valve is sticking open allowing fuel to run after you have shut down the engine this fuel floods the carb and flows down the air duct to the air box), make sure air box is dry inside and maybe use something absorbant like a piece of paper towel to detect which air duct it's coming from this will narrow down the location of the problem. The problem would be worse on an incline as more fuel is getting out of the carb. Letting fuel out the carb drain and re-filling bowls may work as may tapping the float bowls if not it's a carb off job.

[WALTSTAR]

What about a leak from the tank?