Too much fuel pressure?

HVFC6040 · Feb 13, 2019

Just curious what exactly happens when you over pressure a factory fuel bowl. Im assuming the regulator can't overcome the massive amount of pressure, but what else happens with as far as the engine?

Ive been slowly working on my old truck, and trying to diagnose a loss of power issue...then it dawned on me, I still have the old FASS 150/180 (or whatever the numbers are) hooked strait to my stock fuel bowl, with no other mods.

Yeah, I know...stupid me. But didnt even think about the fuel pump when I slapped a stock motor back in the truck.

Magnum PD · Feb 13, 2019

You didn’t change anything with bowl? Still has the stock fuel pressure spring? No fuel pressure gauge?

HVFC6040 · Feb 13, 2019

That is correct

Magnum PD · Feb 13, 2019

You need a fuel pressure gauge then. See what you got

superpsd · Feb 13, 2019

If the regulator is working good the pressure will not change.

DieselDC · Feb 16, 2019

You’re good on the fuel regulator b/c it won’t change unless you messed with it. I’ve rebuilt a few of them so you gotta be careful with them o-rings and aluminum seats/groves.

You’re probably not getting enough pressure? Out s fuel gauge on.

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