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What would cause my fuel tank to be pressurized?

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Old 02-20-2011, 10:39 PM
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Default What would cause my fuel tank to be pressurized?
What wud cause my fuel tank to be pressurized?
 
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Old 02-20-2011, 10:43 PM
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The roll over valve is clogged and not venting the way it should. There's a whole long thread of mine here someplace with this same issue.
 
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Old 02-21-2011, 07:54 AM
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Are you noticing all this pressure when you take your fuel filler cap off? I'd be looking at the fuel cap if that's the situation.

Could this be what you are thinking about:
https://www.dieselbombers.com/dodge-...el-system.html
 
Last edited by RAW; 02-21-2011 at 08:01 AM.
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Old 02-21-2011, 09:45 AM
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Are you positive its pressure? We have had problems with a vacuum building up in the tank, that can cause problems.
 
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Old 02-21-2011, 12:07 PM
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it seems as its sucking air in when i take the cap off, and then diesel vapor comes out
 
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Old 02-21-2011, 01:14 PM
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Yea thats a vacuum in the tank, its just not venting right.
 
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Old 02-21-2011, 10:13 PM
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So new cap? or try driving with it loose and see if that fixes it, then a new cap?
 
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Old 02-22-2011, 08:35 AM
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You could try driving around with the cap loose, or off to see if it makes a difference. I will almost guarantee it will though.
 
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Old 02-22-2011, 12:06 PM
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Sweet! I hope that is the problem
 
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Old 02-22-2011, 12:40 PM
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Go to the junk yard and get a cap for $5. Imo
 
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