1990 f-150 fuel pressure bleedoff
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.
Find out from Ford where fuel safety. Shutoff switch is and reset it
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