Author Topic: flooded carbs  (Read 778 times)

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Offline Burnboy

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flooded carbs
« on: May 12, 2009, 06:21:58 PM »
If you flood the carbs by twisting the throttle too much will the excess gas shoot into the air filter? This is what mine is doing and I opened the carbs up and the floats are just fine, not sure why the carb over flow lines arent working though, they seem to be free flowing.
1975 CB750
1973 CB350F

Offline Burnboy

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Re: flooded carbs
« Reply #1 on: May 13, 2009, 09:28:16 PM »
bump
1975 CB750
1973 CB350F

Offline BeSeeingYou

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Re: flooded carbs
« Reply #2 on: May 13, 2009, 09:54:10 PM »
Twisting the throttle while it may flood the engine should not cause the bowls to overflow.  Could be  worn needle valves/seats or some piece of crud is keeping the needle valve from seating.  Could also be a leaking float.  If you have copper floats they can get pinholes or small hairline cracks with age.  While this may cause leakage into the air filter I am not sure how gas could be shooting into the air filter against the flow.
« Last Edit: May 14, 2009, 08:16:05 AM by srust58 »

Offline Hush

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Re: flooded carbs
« Reply #3 on: May 14, 2009, 01:22:16 AM »
I've had 2 of the black plastic ones sink on me.
If you flood the bike, the excess usually gets sucked out the exhaust ports not backwards to the airfilters?
I think the thing I most like about motorcycling is the speed at which my brain must process information at to avoid the numb skulls who are eating pies, playing the ukulele, applying make-up etc in the comfort of their airconditioned armchairs as they make random attempts to kill me!!!!!!!

Offline Burnboy

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Re: flooded carbs
« Reply #4 on: May 14, 2009, 12:49:13 PM »
yeah once the bowls are full and I turn the bike over gas just squirts out of the ports on the carb into the filter
« Last Edit: May 14, 2009, 01:55:11 PM by Burnboy »
1975 CB750
1973 CB350F