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No fuel pressure

Tiny
RICHTERGROUP
  • MEMBER
  • 2001 FORD F-150
Engine Mechanical problem 6 cyl Two Wheel Drive Automatic

My sons 2001 F150 has no fuel pressure. I have checked the relay and fuse, inertia switch and filter. All are fine. I disconnected the fuel line from the filter and turned the ignition on and no fuel pumps out. I hear a brief noise in the tank as if the pump starts and then stops. My question. Is there any thing else I should try and/or check before dropping the tank and replacing the pump, which I had already replaced 7 months ago. I would really appreciate any help I can get.
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Friday, July 9th, 2010 AT 2:32 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Are you sure the filter isn't plugged? Also, (and don't get mad at this question) are you sure there is fuel in the tank?
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Friday, July 9th, 2010 AT 8:51 PM
Tiny
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I blew through the filter with no restriction. I asked my son the same question regarding the gas, and yes, he filled it up 5 days ago and it now reads 3/4 tank. Should gas pump out with the hose disconnected and turning on the ignition?
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Friday, July 9th, 2010 AT 9:06 PM
Tiny
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Yes, it should spray out. I would have to double check, but it should produce around 50PSI. If you have power to the relay and it is working, either you have a broken wire to the pump, a bad connection at the pump, or the pump itself is bad.
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Saturday, July 10th, 2010 AT 1:06 AM
Tiny
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Ok, I'll drop the tank and inspect the wiring, etc. Is there any way to test the pump prior to purchasing another one, just to make sure?
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+1
Saturday, July 10th, 2010 AT 10:47 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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When you remove the tank, ground it and check to see if the pump is turning on. If it is, disconnect the fuel line and see if any fuel is coming out. Actually, before you remove the tank, disconnect the fuel line before the filter. Fuel should pump straight out from the supply line.

Let me know what you find.

Joe
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Saturday, July 10th, 2010 AT 12:19 PM
Tiny
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Hey Joe,

It ended up being a defective pump. Thanks for the help!
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Monday, July 12th, 2010 AT 4:03 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Glad you found the problem. Let us know if you have questions in the future, and thanks for using 2carpros. Com.

Joe
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Friday, July 16th, 2010 AT 9:07 PM

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