Overflowing Carb

3 replies to this topic

Posted December 29, 2008 - 04:02 PM


Installed a new Throttle screw and main jet. Started the bike up, adjusted the throttle screw, took it for a ride and now the carb bowl is overflowing out the overflow. Took the carb back off, floats look fine, no other obvious problems. Any ideas? Thanks.

  • William1

Posted December 29, 2008 - 04:22 PM


Has to be float related.
Debris in the float needle valve
Float 'hanging up' on something

I bet if you pull the carb, take the bowl and float off, carefully re-assermble, the problem will be gone. Check the float needle area for crap.

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Posted December 29, 2008 - 04:35 PM


Good deal. I figureed it had to be a stuck float. When I had to top plate off to find out where the needle clip was on my bike, I sprayed it out with carb cleaner. That must be where it picked up some dirt. I'll pull it out and clean it. Thanks for the help.

  • William1

Posted December 29, 2008 - 06:11 PM


Never spray a FCR with carb cleaner. It can damage rubber parts. There is a seal on the slide for the vacuum release plate. Eletrical parts cleaner or brake parts cleaner, they are non-damaging to rubber and plastics.


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