Question about 1986 Chevrolet Caprice

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Exhaust pops my gas tank sounds like it is popping alomost like the tank wants to let out air

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Your right maybe but removing the gas cap will equalize any pressure. It's more likly that the inside baffle thats inside may have come loose or part of the fuel pump or gauge unit came loose. The fuel pump can make some odd sounds too but if it is don't expect it to last much longer. Does the car still run OK ? It may have a partly clogged fuel filter and the pump is working way to hard to pump the fuel and making noise doing its job.

Posted on Sep 04, 2009

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Sounds like a defective gas cap vent valve, that is where I would start.

Posted on Sep 04, 2009

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