Question about 1987 Ford F 150

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Fuel is being pushed from Front tank to rear tank until it is empty and then wont start off front tank or rear tank and have to put gas into front tank to restart truck

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Ford had a recall for this in 88-89. the recall was for a defective changeover valve mounted on the drivers frame rail. check to see if it has a small galvanized valve or the larger black one. if it still has the black one. its a bad valve. return from pump is pumpingf fuel to the oposite tank. go to a junk yard and find one with the newer valve is your best bet. or use on tank like i am. i disconnected my rear tank. still have,nt figured out how to wire my gas guage though. hope this helps someone.

Posted on Nov 19, 2009

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The tank is leaking into the rear tank and the rear sounds like it is not tiping up

Posted on Nov 17, 2009

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the gas is regulated from the switching valve you control off the dash. Check the valve to hear it switch
have a friend help you do this. it will be located under the truck between the two tanks. You may have a faultly valve or switch rattling inside changing the tanks setting also while driving which will be hard to tell

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