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Stang_ROTY · 05-20-2003, 01:33 PM

My fuel pressure is low after I drive the car hard and I can't figure out why. I set the fuel pressure the other day to 43psi and after driving around for a while, when I return home and check the pressure, I've lost 5 psi and it's dropped to 38 psi.

Has anyone experienced this problem??

Basically the fuel pressure starts out at 43 psi and when I get home it has dropped to 38 psi. If I bump it back up from 38 psi, and let the car cool off, when I start her back up the pressure is at 48 psi, 5 more than when I first started the car. Something isn't right. Should I do a vacuum check?

05-20-2003, 01:33 PM	#1
Stang_ROTY Registered Member Join Date: Feb 2001 Location: Berkshire County - Massachusetts Posts: 735	Fuel pressure question - HELP! My fuel pressure is low after I drive the car hard and I can't figure out why. I set the fuel pressure the other day to 43psi and after driving around for a while, when I return home and check the pressure, I've lost 5 psi and it's dropped to 38 psi. Has anyone experienced this problem?? Basically the fuel pressure starts out at 43 psi and when I get home it has dropped to 38 psi. If I bump it back up from 38 psi, and let the car cool off, when I start her back up the pressure is at 48 psi, 5 more than when I first started the car. Something isn't right. Should I do a vacuum check? __________________ Red 1993 GT Street Machine Best E.T. - 12.41/Best MPH = 108 Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more