My gas guage doesnt work on my 1988 ford f150 4.9 liter straight six with dual tanks. When both tanks are full and the switch is on the rear tank gas pumps out of the fill spout on the front tank.

Asked by Nov 20, 2016 at 01:46 PM about the 1988 Ford F-150 XLT Extended Cab LB

Question type: Maintenance & Repair

The fuel guage doesnt work. When both the front and rear tanks are full and
the selector switch is on the rear tank, gas pumps out of the fill spout on the
front tank. Any suggestions on what is malfunctioning to cause the back tank
to pump fuel to the front tank and why gas guage does not work?

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