Gas Tank leak

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May 7, 2009 | 01:32 AM

trucker01

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Gas Tank leak

Hi my ford f250's rear tank leaks but only if the engine is running what could the problem be?

May 7, 2009 | 02:03 AM

81-F-150-Explorer

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Quote:

Originally Posted by trucker01

Hi my ford f250's rear tank leaks but only if the engine is running what could the problem be?

It could be the Sending Unit sump, or the short hose at the sending unit sump.

When you have the engine running it's pumping gas through there, and when it's off, the pumping quits.

Is the fuel leaking off the front middle? Even if it don't it could be running off the top to the back.