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Old 03-03-2006, 12:04 PM
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Fuel tank venting problems...

Hi all,

I am a little worried on my tank vent/overflow system...

1. When I am filling up if I do not listen closely it over fills and comes out the vent (which I guess is ok...hmmm)

2. After filling up when I take off the fuel also comes out the vent/overflow and does this for a few miles until the engines used up some of the fuel in the tank.

3. If I ever rolled the car the fuel would drain constantly out of the vent/overflow...

Just wondering what I need (check valve or something on the vent tube?) I drew a half ***** diagram of my system and attached it.

Any help would be greatly appreciated,
John
"GottaC"


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Old 03-03-2006, 01:35 PM
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You might need to move the vent hose up to the level of the filler cap. From your picture I see you have an unconventional setup, so venting next to the filler cap may be out of the question. The only real solution is to make the vent line higher than the filler neck. Can you route the vent line up to the filler neck (or higher) and then back out the bottom?

I know on later model OE gas tanks, the vapor vent is part of the pickup assembly, and won't allow liquid to come out the vent line.
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