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What would cause truck to not crank?

(1990 Ford Ranger)
in Macon, GA on June 21, 2014
Believe it is a fuel issue. Replaced pump and filter; turns over when gas poured in engine, but then cuts off. Currently tracing flow from tank to engine. Truck sat for 4 months after replacing pump. Was able to get it running for about a week, but would cut off occassionally if I let off accelerator completely.
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on June 22, 2014
when you turn the key on do you hear the pump running if not I would check your inertia switch ,should be under the right front kick psnel
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on June 22, 2014
I can hear the fuel pump come on when key is in on position. If I pour gas in the breather, truck will run until fuel burns. Traced flow; NO gas comes out of the pump to flow to the engine. Put a new pump on mid February, ran ok, and then went out of town the next day so truck sat for 4 months. Had some problem when I first started it up and tinkered with it. It ran rough at first, but after a few days, it seemed to be running ok for about a week. I am not a mechanic; my process for fixing problem is a little common sense combined with trial and error. I believe I can fix the problem, I just do not know what the problem is. Changed fuel filter yesterday. Could it be fuel pressure? A sensor? Could it still be inertia switch even though I hear pump come on? Any and all suggestions are appreciated! Thanks for responding!
on June 22, 2014
check your fuel pressure if its not within specs its either a blocked fuel line or the pump is no good
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