Why is it I can only use 1 fuel tank?

Asked by Dec 27, 2014 at 11:29 AM about the 1994 Ford F-150 XLT Extended Cab SB

Question type: General

Rear tanks works fine front tank no
work at all.

1 Answer

675

Could be the fuel pump inside the tank or your selector switch on your dash board. Wiring-connector that goes to the pump could be unplugged-bad. Turn the key on but don't crank the truck listen to see if you hear a humming noise for about 1 second coming from the fuel pump in the tank. Turn the key on and off.....If no noise you'll have to get dirty and let the tank down to check things out.

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