I have a 1976 F250 with and aftermarket electronic fuel pump on it. When I brake realy hard, or turn a sharp left (the fuel moves to the right where it is gravity fed down threw the tank to the first fuel filter) it stalls out unless I throw it in neutral real quick and and rev it up. My only guess is that the fuel pump is pumping in to much gas on both occasions and flooding it out. When it first happend the motor died and it did start but it started up like it was flooded. Is my guess right on whats happening? If so is there a way to stop this or regulate the fuel pump at all? Or am I totally wrong???
Thanks GM32

 

what is the fuel pumps psi

 

Sounds to me like you may have a piece of dirt floating around in your carb and its getting under the float seat.

 

Check your carb float, sounds like fuel starvation.

 

but if it was dirt in or around the float wouldn it do it more often. It literaly only does it if I crank it to the left at med. speed or break hard for a red light or break hard to test it. Other than tha when I go wheelin, idle, HWY speed, around town speed she runs awesome. It only dies on those 2 things, and if I throw it in neutral i can rev the motor threw it and keep it runnin.

 

Your fuel pump doesnt start pumping the fuel at a higher PSI when you hit the brakes really hard, or turn sharply to the right...

The problem is in your carb, most likely with the float levels being set too high, or with the needle and seat not working properly.

There is enough fuel in the carb bowls, and in the fuel line to keep the truck running for up to 35 seconds after the tank goes dry, or the pump sucks air.

I had a hell of a time getting a tiny piece of aluminum out of my carb recently. I had intermittent problems with flooding and stalling for about a week before i finally was able to find the problem piece stuck to the top of the bowl.

It doesnt sound like its starving for fuel to me.... If it was starving for fuel, it would just die when you tried to rev it up, it it doesnt have enough fuel to maintain an idle during sudden turning or stopping, it wouldnt have enough fuel to all of a sudden turn 3500 RPM, or whatever you would have to rev it up to in order to keep it running.

It sounds like the engine is flooding when you turn or come to a stop because the fuel is either sloshing out of the air bleeds, or being siphoned out of the air bleeds by the engine vacuum because there is too much fuel in the bowls.

 

OK thanks for all the info, guess I am workin on a carb tomorrow , thanks again everyone.