Originally Posted by techinspector1
Edelbrocks and Quadrajets will tolerate up to around 6 psi, but will run best with 5 to 5 1/2 psi fuel pressure. Holleys will tolerate up to around 7 psi, but will run best at 5 to 5 1/2 psi fuel pressure.
Fuel flow into the carburetor bowl is controlled by a needle and seat arrangement. Excessive fuel pressure will unload the needle and seat and blow raw fuel into the intake manifold, creating the problems you posted.
Most of you younguns have grown up with EFI, where you can make more horsepower with more fuel pressure. Carburetors are a completely different ballgame. Get your fuel pressure down to 5 to 5 1/2 psi before you do anything else.
Yes, this carb is a "dillman racing carb" Never heard of them..Im guessing some sort of aftermarket shop carb. I had to clean out the needle and seats cause the car sat for 8 months and was gunked up. Keep in mind i just go the car and have no idea what the timing is set at yet, Im just having start up and runing issues at this point.