i have a gas 97 f250 4x4 and the gas is backing up the front tank. what would cause this?

Asked by Mar 17, 2014 at 04:44 PM about the 1997 Ford F-250 2 Dr XLT 4WD Extended Cab LB HD

Question type: Maintenance & Repair

i haven't used the front tank since i bought it a few months ago. when i tried it died so ive only been using the rear tank. is it from lack of use?

2 Answers

105,485

The switching valve is most likely the problem with fuel backup and may also be the problem with it not running on the front tank, if the valve won't switch all the way it can cause the return from the rear to feed into the front and also not turn on the fuel pump in the front tank when selected. But you may also have a bad fuel pump in the front tank. Hope this helps.

1 of 1 people found this helpful.

thanks, its a start. from what else ive been reading that seems like it could be it. but im by no means a mechanic, so all the advice i can get helps. thanks

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