GAS TANK...WHEN I FILL UP...ALOT OF VACUUM IS HEARD THRU THE FILLER NECK. THE PLASTIC TANK IS COLLAPSING.

1997 Chevrolet Venture

Tiny

autorep

April, 25, 2012 AT 1:13 AM

What would be the problem? The gas cap seems to be OK. How much vacuum should be on the tank (running) and (parked overnight) The bottom of tank is concave off the saddles.
HK

FOUND 115 RELATED QUESTIONS

1 Answer

Tiny

ASEMaster6371

April, 25, 2012 AT 1:16 AM

First, I would replace the gas cap. I would also have the vent valve checked as it may be bad as well.

Roy

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