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#1
05-21-2008, 04:26 AM
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YIKES!! 1988 300E Pressurized Gas Tank Problem
Hi folks,
About a month ago my 300E stopped suddenly and hasn't started since although it continues to turn over effortlessly. It's been parked all this time and I started working on it today. After a few attempts at starting I opened the gas tank filler cover and gasoline spewed out as if it were under pressure! The car is in the attached garage and I'm worried about how much gas might end up on the floor - fire hazard and all. Can anybody explain this phenomenon? I've never experienced anything like it. Any suggestions on what to do? Thanks in advance to all. 
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#2
05-21-2008, 09:54 AM
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There is a check valve to allow the tank fumes to go into the charcoal canister. It is not opening and letting the fumes out of the tank and it builds up pressure. Have it replaced.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#4
05-22-2008, 02:39 PM
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I don't know any part numbers sorry. The one for the 126 body are located on the left side high up near the top of the fuel tank not anywhere close to the fuel pumps. It is a vapor check valve.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#5
05-23-2008, 02:15 PM
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How much "pressure" is normal when releasing the gas cap? I know that mine always makes a pretty big pressure release...but I've never had gas spew out.
Could I have a problem also? Should there be any pressure release of gas?
__________________
2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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