tank leaks when full..

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Jul 5, 2006 | 09:20 PM

Smearin

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Joined: May 2004

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From: Colorado

tank leaks when full..

I have a 00 trans am ws6.... When I fill up with a full tank of gas, and the car sits... gas starts to drip off the heat shield .. I checked the fill tube gasket around the tank and it doesnt seem to be leaking gas.. The pump cant be fuel pump gasket cant be leaking because I just had my fuel system redone with new pump.. so what else is left?
it only does this when i have a full tank... between 3/4 and full tank.

thanks

Jul 5, 2006 | 09:44 PM

crazytrain

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Check the gasket on the top of the tank where the pump mounts. It probably rolled when the pump was re-installed.

Jul 5, 2006 | 10:23 PM

LTSpeed

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Joined: Oct 2004

Posts: 607

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From: Anna, OH

Quote:

Originally Posted by crazytrain

Check the gasket on the top of the tank where the pump mounts. It probably rolled when the pump was re-installed.

This happened to me. It's very easy to do. It made me glad I did the trap door method when changing the pump. It would have been a real pain to drop the tank again.

I had a 73 Z28 that leaked from the top after running Ethanol for awhile. That stuff ate up the seals. I'm sure the newer ones use a different rubber compound though--at least I hope they do!