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View Full Version : 30 Lbs. of fuel pressure, not good right?



Stangman
04-23-2007, 08:15 PM
just checked my fuel pressure with a brand new gauge, reads 30# when primed, then when started it gets 30# at idle, this is one of my last ditch efforts to find out why my engine light came on yesterday, Ive heard that that i should be getting 35-40# at the rail, is this a sign that my 181K mile fuel pump is going bad??:D

and if indeed it is bad, any recomendations on pumps? and adjustable pressure regulators??

thanks!:bigthumb

Paul408Notch
04-23-2007, 08:31 PM
Did you check it with the vacuum line removed? Take the line off of the regulator, hold your thumb over the line, and check the pressure then. Rev it a bit to make sure the pressure is steady at idle as well as up in the RPMs a bit.

Walter
04-23-2007, 08:49 PM
what was the code? I doubt the fuel pump is a problem if ur getting 30# with the vac on.

Stangman
04-23-2007, 09:33 PM
code 556, fuel pump, primary circuit, circuit malfunction.. that was the code i was getting, lately i think i am just gettin a lean code, which was code 176 when it was checked

PaulFiveOh
04-23-2007, 09:39 PM
Wait....I was recomended to run 36 lbs with 30 lb injectors.....any thoughts on this?