CBR 600F3 1995 - 1998 CBR 600F3 Forum

float valves???

Old 10-06-2011, 05:33 PM
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I don't think that is the problem since the idle mixture screw is after the floats. I think there could still be something interfering with the floats operation. It's hard to say without seeing.
Old 10-06-2011, 05:40 PM
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right, nothing good is simple =) i took pictures last night but my SD card wasnt in the camera doh, i'll snap some tonight after school, maybe they will be able to tell you something!
Old 02-19-2012, 03:24 PM
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I am having the same problem did anyone figure out what it is? please help me
Old 01-31-2018, 11:27 AM
Join Date: Aug 2017
Location: Louisville, Ky
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Originally Posted by ianp5uk View Post

I had a problem with my bike when I got it - fuel was leaking out of one of the brass jet things you can see in the air filter side of the carb. The problem was caused by a blocked starter jet (the one in the bowl that doesn't screw out). This I guess was causing a pressure inbalance which forced fuel out of the jet thingy at the carb inlet and was flooding that cylinder - not as bad as yours. Not saying that's the problem but it's an indication of what can Happen
I'm having this problem when the bike is turned off it's leaking through a hole that's jus above the butterfly flap. You can see it when carbs on bike looking down into them. And it sounds like pressure is causing this!!! what is it? I jus had carbs off doing a deep clean!!! Please help I have a thred in general tech but no one has replaied to it yet!!! It would help me a GREAT DEAL!!!
Old 10-12-2018, 03:22 AM
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same here, having the same issue.
The jets are all new, and new float valves as well.
Floats are original;, but are not leaking.
Starts fouling plug 1, then gradually does all of them.
My floats look higher than 13.7mm for sure, but I'm not young so could be my eyes lol.
Just blew air through all circuits of the carbs. Slides work properly as pressure is applied.
Nothing seams to be blocked.
Fuel filter is new, as is air filter.
Just waiting on some new O rings and seals to see if there was any issues there.
The bike is 22 years old, so its gonna have issues.
I bought mine as a running project, and now I've brought everything up too good level, the carbs prove to be the last hurdle......sigh
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