Y2K SS

iTrader: (1)

Asked around and couldnt get a straight answer. What fuel pressure should your car have or read on the gauges????

SoCalZ28

iTrader: (10)

stock LS1 should have 58-60 psi

slow

iTrader: (7)

A stock ls1 should have 58# at the rail at all times (Static rail pressure)

Ryan

Y2K SS

iTrader: (1)

My car is getting 52 to 54 at idle and 50 when I floor it. Pump or filter????

DrkPhx

iTrader: (15)

On the low side, especially at WOT. The GM manual calls for 55-60 psi at the rail with the ignition switch in the ON position. Another thing to test is the pressure bleed down. It can't hurt to change the filter, especially if it's the original one. It could also be the pressure regulator.

B.W.

iTrader: (3)

Mine goes down to about 50 at idle but around 60 when driving. Is is normal?

Y2K SS

iTrader: (1)

Thats a first. Never heard of it going up when on the gas.

2002covtz28

iTrader: (13)

mine does the exzct samne thing but more like a constant 52 an idle and around 48-50 at wot, i already changed the filter with same results, so i guess i am going to get a new pump and regulator, gonna be doing a h/c swap soon anyway so this will be out of the way

dws6

Could be because your voltage is low at idle and when you add rpm the alternator puts out more voltage increasing fuel flow/pressure.

Behemoth

iTrader: (1)

I have an upgraded fuel pump (racetronix) on a h/c car. At first it started off at 60psi and has dropped to 53psi and goes to 50 psi at wot. I've changed the filter and pump is pretty new (~5k miles). How do you test to see if the regulator is bad?