1990 f-150 fuel pressure bleedoff

Asked by Robert Mar 16, 2013 at 12:52 PM about the 1990 Ford F-150 STD 4WD SB

Question type: General

truck will not start ...the key on position pump comes on rail has gas bleeds off in seconds

2 Answers
177,545

tenspeed answered 11 years ago

There's only a few places the gas can go to. One is through the regulator and back to the tank. Another is a bad regulator and gas goes into the intake through the diaphragm. The third is back to the tank via the fuel line. The fourth is into the engine through a leaking injector.

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