Engine Mechanical problem
1996 Ford F150 V8 Two Wheel Drive Automatic 212000 miles
I'm having a problem with my truck maintaining fuel pressure. It has 32psi at the rail when I start it, but it soon drops, causing the truck to sputter when you try to accellerate. I have taken the pressure regulator off and attached a hand vacuum pump and it holds steady at 40psi. I have good vacuum on the line that plugs on to the Regulator with no gas smell. I have also changed the rear tank pump and I am getting no pressure when I switch to the rear. I can hear it run, so I am a little confused. I have replaced the plugs, cap, rotor, wires, fuel filter and TPS sensor. I am at a loss on this drop in fuel pressure. Any help will be appreciated.
Saturday, February 13th, 2010 AT 3:51 PM