SidewaysStang

I have till the weekend till my new fuel pump comes so Im wondering how long will my worn out fuel pump last if I clamp the return line so it boosts the pressure enough for the car to run right? Would the fuel pump last about a week under the added stress? If it would then thats perfect.hehe

StangTangGT

haha i dont know if thats the safest way to go but how come you dont purchase an adjustable fuel regulator

stanglx2002

i wouldnt do that just spend the money and get a AFPR with a gauge

Djs94stang

First of all, I think all you have to do is disconnect the vacuum line to the regulator so that the fuel pressure will be maxed all the time. Clamping the return line wouldn't be a smart thing to do since the fuel pump operates at either 2 set rpms. One for slower speeds and one for higher engine rpm. The pump is running max all the time and returning unused fuel to the tank. You wouldn't be taxing the pump anymore than it is already but you would be forcing line pressures to unknown values by clamping the lines.

86HOGT

THe pump runs at the saem RPm all the time. A pump creates flow, not pressure. Pressure is created with the resistance to flow, hence the FPR. If you clamp the return line, you're going dead head the pump which is really stressful and can ruin the pump.

SidewaysStang

hahaha.yeah I know its gonna kill the pump.I was just asking how long until it dies completely. And so far I did it and it hasnt died on me yet.hahahaha My new fuel pump comes tommorow.so this was just temp thing.

stanglx2002

why do you need more fuel pressure

SidewaysStang

Because my fuel pump is dying.