Question about 1987 Ford F 150

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87 F150 sputters and stalls after driving about 20 to 30 min.

1987 F150 with dual tanks. I have had the electric fuel pump and relay replaced with no effect. I have let the truck idle for 1 to 1-1/2 hours with no problem.

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Dual tanks sounds like one of them is letting air into the line. Had the same problem and when one tank was empty it would let air in to the line making the truck stall out and not start. Had to keep at least 1/2 tank in the one. Might want to change out the tank switch over.

Posted on Jul 05, 2009

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