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Leaky Carbs

Posted: Sat Feb 21, 2009 2:19 am
by crazylegs
HI having problems with a 73 bus with stock carbs flooding itself overnight .
The fuel pump is a rotary Pieburg (max pressure 2/3psi) wired into the coil.
There already been (or so I'm told at this point ) new float valves etc been fitted to the carbs .
Thinking of redoing the carbs again with new float valves again etc and maybe wiring the pump through a relay wired to the regulator .
Anyone any more suggestions ?

Thanks

Posted: Sat Feb 21, 2009 8:05 am
by bretski
Bad floats are a definite candidate for leaks. If you need a quality rebuild, get in touch with keifernet (PM him). He's da man.

Re: Leaky Carbs

Posted: Sat Feb 21, 2009 11:09 am
by Amskeptic
crazylegs wrote:HI having problems with a 73 bus with stock carbs flooding itself overnight .
The fuel pump is a rotary Pieburg (max pressure 2/3psi) wired into the coil.
There already been (or so I'm told at this point ) new float valves etc been fitted to the carbs .
Thinking of redoing the carbs again with new float valves again etc and maybe wiring the pump through a relay wired to the regulator .
Anyone any more suggestions ?

Thanks
New needle valves often require positive seating, use your finger while you blow through the inlet.
Check your fuel levels very carefully, installed on the engine with the car perfectly level, they should be 13mm below the body of the carb with floats in place.

I had a flood incident a month ago. It was just crap in the needle valve. Took 30 minutes to disassemble, clean, reinstall.
Colin

Posted: Mon Feb 23, 2009 2:28 am
by crazylegs
Thanks I'll let ye know if /what I find .