truck cut off while driving and won't start back up

Asked by Mar 06, 2015 at 07:40 PM about the Ford F-150

Question type: Maintenance & Repair

I was driving and the truck cut off. it was like I ran out of gas. I though that the safety switch tripped so I checked that and it was ok. I sprayed starting fluid in to the intake and it starts but cuts off as soon as the fumes are gone. when I turn the key on I can hear the fuel pump running and I put a new pump relay on it. there is a valve at the end of the fuel rail when I open that valve with the key on fuel shoots out so I know that I am getting fuel  to the fuel rail buy its not getting to the engine.

1 Answer

21,120

Well, we do not know what year truck you are driving, but moderate age trucks with injection have a test port on the fuel rail. I do not suggest to defeat the mechanism on the rail as fuel will shoot out all over the place. If you suspect the fuel pump, purchase a test gauge and test the pressure properly. A decent one is about fifty bucks.

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