1991 F-150 4x4 5.0 dual tank wont start, the fuel pump is whining when and if the fuel quits whinning then it will start.

Asked by Graphics Mar 18, 2011 at 08:31 PM about the 1991 Ford F-150 XL 4WD Extended Cab LB

Question type: Maintenance & Repair

1991 F-150 4x4 5.0 dual tank wont start, the fuel pump is whining when and if the fuel quits whinning then it will start.
It is trying to prime the gas to start, but wont start??
Replaced the fuel pump relay & pressure valve on the rails.

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Jeremy answered 6 years ago

Try bypassing the fuel tank switching valve if it works replace the valve. Also....are you sure you have gas?

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barleypop answered 6 years ago

Could be the fuel line is loose and sucking air

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Your Answer

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1991 F-150 4x4 5.0 dual tank wont start, the fuel pump is whining when and if the fuel quits whinning then it will start.

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