Question about 1990 Ford F150

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Ford F150 1990 truck - Gas was leaking from the front tank. Replaced the grommit and now it is pulling the gas from the rear tank to the front an overflowing out of the nozzle where the gas cap is.

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You definately need to get the truck serviced soon. To just guess at it, the balance pump isnt shutting down. The guage may not connected or moving freely.

Posted on Jun 18, 2009

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Posted on Jan 02, 2017

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Fuel pump replaced 3 times. Now gasoline is pouring out underneath


The fuel pump is located inside the fuel tank. It's possible that the last time it was replaced, one of the fuel line connections was left loose. Have it checked out immediately!

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Fuel Gas Tank Reservoir Selector Valve leaking when using front tank


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Replace the valve or rebuild it.
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The gas gauge for the front tank on my 1992 F150 is stuck past full


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Apr 02, 2013 | 1992 Ford F150 SuperCab

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1991 FORD F150 DUAL TANKS,GAS LEAKING OUT OF ONE TANK FROM ( GAS CAP )


Have the same truck and had the exact same problem. Mine spilled out the front tank. Ford did a recall on this problem. They put valves on the lines outside the tanks. Mine had already been done so that was not the problem. The pumps have valves inside for the return lines. I replaced the rear pump, didn't fix it. Replaced the front pump and Voila ... it was fixed. Bad valve in the front pump return line.

Oct 07, 2010 | 1991 Ford F150

1 Answer

My 89 Ford F150 dies when I switch fuel tanks from rear to front tank,and now leaks gas some where in the area of the side front tank when Iam running on the rear tank.Where do I begin?


Does you truck restart after dying and then run ok or does it stay dead until switching back to the rear tank?
It could be that the front tank has a leak in the suction line which will leak when not in use and **** air when you switch to it.
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May 01, 2010 | 1989 Ford F 150

2 Answers

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


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.

Nov 17, 2009 | 1987 Ford F 150

1 Answer

Gas leaking out where you fill the front tank


You probably have a defective fuel-tank selector valve. Its located on the left frame rail, halfway down. While the vehicle is running, tank"A" is pumping fuel to the engine, while tank "B" is getting the unneeded fuel that is returning from the engine. Thats why it is overflowing.

Jun 18, 2009 | 1990 Ford F150

1 Answer

How do I remmove secondary fuel tank which is leaking?


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Feb 20, 2009 | 1990 Ford F150

2 Answers

Fuel system


Have the same problem, its the switch valve, not sure how to fix it yet. But i can tell you thats what it is.

Oct 06, 2008 | 1996 Ford F150 Regular Cab

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