wayneschreve

Need a straight answer. My 94 Ford F150 will start and stay running but lacks enough power to move the truck. Parts houses day it is the fuel pump so I attached the pressure kit and the manifold read 35 to 43 pounds with a new fuel filter. Some say this is too low, some say this is right, parts houses say the pump delivers 105 lbs and it is supposed to read that. Engine runs smooth but acts like it is starving for gas when you try to move the truck, any answers?

Chris_1

iTrader: (1)

Your truck will run between 30 to 45 psi. KOEO 43 is good. 35 idling is fine (idle and coast are the lowest pressure times). Pressure should climb back up to it's maximum as you start to rev it a little.

Mine - 95 5.0 - runs perfect, it has 42 KOEO, 37 idling and 42 revved a little. Drops back to 37 when I let go of the throttle.

If your specs are close to that, it's not a fuel pressure issue. It could be the TPS, you can test that with a multimeter.
After that I'd start looking at the ignition system.

wayneschreve

I don't have any history on the truck, bought it to tinker with, had a blown rear end, just trying to get it running smooth so I can get ride of it before fishing starts, won't have the time then.

BLDTruth

If your fuel pressure is 35-43 psi than that shouldn't be the problem. Like Chris said I would verify your TPS is running properly - there is a thread here called "Testing the TPS" or something like that - I think Chris actually made it so you can search his stuff.

If you are planning on tinkering and have no history I would recommend the first thing to do would be the basic tune-up - coil, wires, cap & rotor, plugs, fluid changes, replace vacuum lines. It may not fix your current problem but it will certainly help prevent future ones.