YOMAHOMIE03

I posted a thread about my wife's 09 250cc Ninja leaking gas and finally just got a chance to look at it. I took moved the gas tank enough where I could see everything and I noticed that there was a hose that went to the middle of the carbs. Anyone knows where the hose goes. There's a empty spot on the petcock. Is that it? Any comments are useful. Thanks!

Dablue1

That hose is a carb vent hose and attaches to nothing. It just hangs over the airbox. Is it still leaking? Were you able to trace the hose back to the source of the leak?

YOMAHOMIE03

Yes i found the source of the leak. It's coming from a clear hose attached to the bottom of the air box. I opened the air box and it had gas in there as well. I also can get it to start if it has been sitting for a while but white smoke comes out of the exhaust and it eventually dies. Any tips please.

tippyshooter

air box drain hose sounds like, usually stema from a stuck float valve. may need to get the carb out and clean it up.

Dablue1

If there is that much fuel in the airbox, there is a big problem. Occasionally the carb may spit gas back out the carb, but it should not be enough to drain. This is called reversion. Reversion is the flow of the air fuel mixture out of the cylinder and into back into the intake manifold. Reversion happens even on a stock engine because the piston is moving up the cylinder before the intake valve closes. When was the last time the valves were adjusted?


Also White smoke can mean;
Piston oil ring worn
Cylinder worn
Valve oil seal damaged
Valve guide worn
Engine oil level too high