fuel tank overflows out the neck.

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09-05-2007, 10:40 PM

pastorattheridge

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fuel tank overflows out the neck.

my 88f150 st6 pumps gas from the back tank into the front tank.
what do I have to replace to stop this????

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09-06-2007, 07:04 AM

subford

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More than likely the fuel selector valve on the frame.
Could also be a weak rear fuel tank boost fuel pump.

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