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air out of the gas tank ???

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Old 03-22-2010, 09:27 PM
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air out of the gas tank ???
When I remove the gas cap I hear air release from there. I've never had that happen with any other car. Any idea why this is happening?

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Old 03-22-2010, 09:29 PM
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that happens to me all the time prrty sure its just pressure releasing almost like a soda bottle
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Old 03-22-2010, 09:33 PM
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pressure. happened in my 66 chevy, in my 1991 isuzu trooper, in my family's 2001 expedition, my moms new versa, my dads old ranger, and my 2001 F150. totally normal. dont worry!
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Old 03-22-2010, 09:38 PM
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heat from the fuel pump creates pressure.
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Old 03-22-2010, 10:09 PM
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its supposed to happen. just weather or not the manufacture calls for a vented fuel cap or non vented fuel cap...
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Old 03-22-2010, 10:32 PM
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Thanks everyone!
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Old 03-23-2010, 03:42 AM
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It probably is a plugged charcoal canister. The tank has a fume vent run into the canister, which equalizes the tank. Having excess pressure in you gas tank can sometime mess with your fuel gauge and cause problems with the fuel pickup. Use a air compressor and back flow the canister, that might loosen it up.[/COLOR]
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Old 03-23-2010, 03:45 AM
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Are you sure it's pressure and not vacuum?
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