Fuel Cap Hissing - Ford Powerstroke Diesel Forum
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Old 09-05-2013, 08:19 PM
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Fuel Cap Hissing

Hello, I am new to the diesel world, and just recently bought my first diesel 1997 F250. When ever I go to fuel my tanks up which ever tank im running on hisses when I open the cap, Is this a problem or normal?

I read some forums about diesel vehicles stalling because of a vacuum created in the tank, but the truck runs great havent had any problems.

Thanks for the help.
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Old 09-05-2013, 09:11 PM


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It's just pressure built up inside the tank... Don't worry about it. Welcome to the org
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Old 09-05-2013, 11:43 PM


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X2, mine does it if I've been running that tank but only if I he'd about the whole tank in 1 day does mine hiss
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