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Air comes out of Gas tank when pumping gas?

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Old 11-19-2012, 10:52 PM
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Air comes out of Gas tank when pumping gas?
Hello everyone I have a fairly nice 91" Pontiac firebird with a V8 305 in it and I have noticed that when I go to pump gas into the gas and remove the gas tank cap I get a lot of vapor/air coming out of it, is this something to be worried about or something that can be fixed? I also notice I have a smell of gas around the car when its on, I don't know if its an exhaust issue or what it could be and am a little scared it could be something major. Any ideas?
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Old 11-20-2012, 12:23 AM
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Re: Air comes out of Gas tank when pumping gas?
Possibly the purge line from the tank to the charcoal canister is blocked not letting the tank vent pressure
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Old 11-21-2012, 01:12 PM
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smell of gas cracked fuel neck?


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Old 11-22-2012, 12:07 AM
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Car: 14 scion tc/91 camaro rs
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Re: Air comes out of Gas tank when pumping gas?
Should be able to get a vented gas cap.
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Old 11-22-2012, 05:06 PM
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Re: Air comes out of Gas tank when pumping gas?
Originally Posted by FtrSpeedy
Should be able to get a vented gas cap.
Doesn't actually solve the problem does it?
Just bypasses it
These cars use a sealed system with a non vented cap and the tank fumes are burnt in the engine
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