Hi Guys,

This is stumping me. I am fixing up a friends 1999 CBR 600F4 and am having really bad fueling issues. When I first got the bike from him, it seemed to run good, but being as it had sat for over a year, I took the carbs off and cleaned all the jets. Upon reinstalling the carb assembly and getting her to fire up, I noticed I had a ton of leakage coming out of the vacuum hoses (the one that runs along the front of the motor and the one that goes to the front ram air duct). I took off the air box and noticed that there is fuel coming out of the vacuum chambers into the carbs. I'm really hoping I have a hose or two crossed up somewhere, because this is a real pain. Any help is appreciated.

 

No one has any input?

 

You might need to revist the carbs and look for a float that is stuck open.

I am not a super-carb guru, though. I'm still learning the ins and outs.
Maybe IDoDirt or 74Demon, can tweak the response...

Good luck, Ern

 

Hey Man,

Thanks for the response. It was a stuck float or atleast that seems to have been the problem. Got the carb off and checked the floats. all is good now.