fuel pressure [Archive] - GrandAmGT.com Forum


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02-22-2008, 01:59 AM
hi everyone i have a doubt about the fuel pressure, i owned a 2001 grand gt and a 2002, and heres the doubt the fuel pressure for the 2002 is 52-55psi and the 2001 is 40psi always, is that the right pressure for the 2001 or i need to change the fuel pressure regulator (note i change the fuel pump on the 2001 yesterday but before the fuel pump fail always have the 40psi of pressure ), cause until i know its the same motor and its a lot of diference between the pressure of the cars

02-22-2008, 06:01 AM
My 01 runs slightly above 40 PSI at idle and mild acceleration. Anything over 70% throttle and my gauge goes up to the 50-55 PSI range.

02-22-2008, 07:11 PM
My 2000 used to run at 48psi at idle. Up in the 50's under acceleration.

02-23-2008, 12:35 AM
so what everyone think shoud i change the fuel pressure regulator

02-23-2008, 06:40 AM
Is it leaking gas? If its not then you dont need to change it.