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Old 11-03-2007, 03:48 PM
Registered User
Join Date: Nov 2003
Posts: 155
Gas Gusher

1989 300E

Very strange thing just happened to me. Filled up the car yesterday and drove it 10 miles home. Did not overfill, simply stopped when the pump stopped. Went out to the car and opened the gas cap today, rather than the normal hiss, gas simply gushed out at me. Not once but twice. What could cause this? Is there some one way valve that has failed in the vent lines? Never seen or heard of this before. No smell of gas in car or trunk either.

Any ideas appreciated.
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Old 11-05-2007, 12:24 AM
Monomer's Avatar
Colonel Blitz
Join Date: Jan 2006
Location: Detroit, MI
Posts: 836
The hiss indicates a plugged vent, and could result in a vacuum-crushed tank.

order a new part from the dealer.
-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build)
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Old 11-06-2007, 01:57 PM
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Join Date: Feb 2003
Location: roslyn, LI,NY
Posts: 445
gas gushing.

I had this happen once on my 1977 450sl.. Opened gas cap and fuel gushed out. Try blowing vent lines (from cannister if you have one ,not too much air pressure!) Never happened again. Wish yu luck, Abe G
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