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Old 07-11-2011, 11:59 PM   #1 (permalink)
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Default Gas smell after parking - no DTC codes

After parking my 2002 taurus with a vulcan engine, there is a strong gas smell outside of the car, most noticable after at least 30 minutes and can last all day parked in the hot weather. The smell seems to be the strongest around the rear of the car and in the trunk. The CE light is off and there are no codes stored.
I checked and didn't see any fuel leaks and don't think my gas mileage has went down. The car runs fine with no problems other than this smell of gas. I replaced the fuel filter but that didn't help.

What could be causing this gas odor???
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Old 07-12-2011, 12:17 AM   #2 (permalink)
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After parking my 2002 taurus with a vulcan engine, there is a strong gas smell outside of the car, most noticable after at least 30 minutes and can last all day parked in the hot weather. The smell seems to be the strongest around the rear of the car and in the trunk. The CE light is off and there are no codes stored.
I checked and didn't see any fuel leaks and don't think my gas mileage has went down. The car runs fine with no problems other than this smell of gas. I replaced the fuel filter but that didn't help.

What could be causing this gas odor???
have you tired using card board under the car to confirm you dont have a leak? just make sure its not near the hot exhaust pipe
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Old 07-12-2011, 12:26 AM   #3 (permalink)
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have you tired using card board under the car to confirm you dont have a leak? just make sure its not near the hot exhaust pipe
No but I did watch for leaks under the car for a few minutes. I'll try that though. Any other suggestions?
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Old 07-12-2011, 01:30 AM   #4 (permalink)
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i can tell you gas smells are hard to track with out seeing a leak. i would also unscrew the gas cap and listen for vapor release. i would drive the car for a few and park it wait 5 mins and check for a vapor release. i cant really help you that much on this one. the problem is on hot days a little leak will evaporate before hitting the ground. i have gone as far as filling up the tank and parking in a garage and applying baby powder on the gas tank and lines to find leaks. anyone else want to chime in here????
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Old 07-12-2011, 06:25 AM   #5 (permalink)
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I just changed the tank in my wagon, jack it up an get under it, you'll see the back of the tank rusted and damp stains on the tank from a porous tank.
"00 to '03 tanks known to rust out from my research on this board.
Filler tubes can rust also per my research, mines still OK.
I didn't see mine weeping fuel until I jacked it up and got under it. Wasn't at the drip stage but you sure could smell it.
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Old 07-12-2011, 06:42 AM   #6 (permalink)
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^^^^^ +1

Do you live in the rust belt? I do, and have seen cases of tanks rusting on the top causing very small pinholes. Gas "leaks" out due to sloshing when driving and it smells for a while after parked and then the smell dissipates.
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Old 07-12-2011, 07:02 AM   #7 (permalink)
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Originally Posted by repairman54 View Post
I just changed the tank in my wagon, jack it up an get under it, you'll see the back of the tank rusted and damp stains on the tank from a porous tank.
"00 to '03 tanks known to rust out from my research on this board.
Filler tubes can rust also per my research, mines still OK.
I didn't see mine weeping fuel until I jacked it up and got under it. Wasn't at the drip stage but you sure could smell it.
Couple examples of gas smell cause, not from the tank itself.

You can get the smell without a code that would be small vapor leak.

Good Luck.

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Old 07-12-2011, 11:37 PM   #8 (permalink)
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i can tell you gas smells are hard to track with out seeing a leak.
It's a royal pain in the ass!

I put down cardboard but didn't find any gas leaks.
A new gas cap did not help. There hasn't been any sounds of a release of pressure when unscrewing the old or new gas cap. I don't live in the rust belt. I'm in NC. I didn't see any rust on the back of the gas tank or anywhere else under the car. No damp stains either. The fuel filler tube looked fine from what I could see with a flash light shining up on it. If there is a pinhole at the top of the gas tank or filler tube, I don't think I would be able to see it.

I sniffed around all under the rear of the car but couldn't find a location with a strong gas smell. I also drove the car for 30 minutes on a highway hoping the CEL would give me a code. Of course the CEL won't light up and give me a code when I want it too.

This is driving me crazy! I may have to take the car to a shop to get a smoke machine test on the EVAP system.

Any other ideas on what could be wrong? Thanks!
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Old 07-13-2011, 09:14 AM   #9 (permalink)
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I used to have your gas smell situation on my '02 Vulcan as well, but only in the hot summer months. I had to replace the fuel pump, thought that would fix it. Received advice to never fill after the first click, that helped considerable. I had been buying gas at Sam's Club, changed to another brand and haven't had gas smell since.
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Old 07-14-2011, 11:57 PM   #10 (permalink)
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I used to have your gas smell situation on my '02 Vulcan as well, but only in the hot summer months. I had to replace the fuel pump, thought that would fix it. Received advice to never fill after the first click, that helped considerable. I had been buying gas at Sam's Club, changed to another brand and haven't had gas smell since.
I never top off the tank after the 1st click, at least not in a long time. I can try changing brands the next time I get gas.
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