Fuel puddling, AFB 750, primaries siphoning?
The problem usually is the ethanol fuel. You need to put a return on the line after the mechanical fuel pump and before the carb . Due to the pressure dead ending up against the needle and seat. it pushes past when shut down.
The float does not have enough pressure to stop the fuel with ethanol fuel. And all fuel has it in now . They started using these filters on the carbureted cars in the late 70's due to the fuel at that time and it got worse since.
Many carbureted cars have a hard time restarting after warmed up and shut off because they flood from fuel bleeding past.
Electric pump carbureted cars are worse . On those systems you need to run a bypass pressure regulator. The old school pressure regulators don't work you need a bypass regulator. The the old school regulators still dead end the fuel pressure at the needle and seat. It needs to by-pass
Every car done here gets a return. The difference in performance is unbelievable. Get one and install it using the vent line for a 71-76 if you have a manual pump.
Electric pump carbureted cars get expensive. It was an extra $200 just for the braided line and fittings the regulator is around $80
Holley 12-881 Holley Carburetor Bypass Style Fuel Pressure Regulators | Summit Racing
Your welcome. Steve
The problem usually is the ethanol fuel. You need to put a return on the line after the mechanical fuel pump and before the carb . Due to the pressure dead ending up against the needle and seat. it pushes past when shut down.
The float does not have enough pressure to stop the fuel with ethanol fuel. And all fuel has it in now . They started using these filters on the carbureted cars in the late 70's due to the fuel at that time and it got worse since.
Many carbureted cars have a hard time restarting after warmed up and shut off because they flood from fuel bleeding past.
Electric pump carbureted cars are worse . On those systems you need to run a bypass pressure regulator. The old school pressure regulators don't work you need a bypass regulator. The the old school regulators still dead end the fuel pressure at the needle and seat. It needs to by-pass
Every car done here gets a return. The difference in performance is unbelievable. Get one and install it using the vent line for a 71-76 if you have a manual pump.
Electric pump carbureted cars get expensive. It was an extra $200 just for the braided line and fittings the regulator is around $80
Holley 12-881 Holley Carburetor Bypass Style Fuel Pressure Regulators | Summit Racing
Your welcome. Steve