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924S fuel odor source unknown

When I start the engine on my 1987 924S and lower the windows I can smell a gasoline odor. There is no obvious fuel leak in the engine compartment or beneath the car. The odor seems to go away when I drive with the windows up as well as when the fuel level in the gas tank goes down below about half full. And I believe gas mileage is less than normal.

Any ideas on where to look for the source of this?
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Previously owned: 1977 924, 1978 911SC Targa, 1986 Carrera Targa
Currently: 1985 Carrera Targa, 1987 924S
Old 09-16-2013, 04:55 PM
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Proprietoristicly Refined
 
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Usually around the fill hoses on the inside of the car.

Remove the carpet and metal panel and check for cracked hoses.

Remember to seal the metal panel again with a black rubber sealant.

OR (very common----every 924S tank I have seen. Both tanks on my cars and the spare tank on the shelf)

One of many posts.

Gas fumes? Tank leaks? Read this.

GL
J_AZ
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Old 09-16-2013, 05:19 PM
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Thsnks, and thanks for the link to a great thread.
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Previously owned: 1977 924, 1978 911SC Targa, 1986 Carrera Targa
Currently: 1985 Carrera Targa, 1987 924S
Old 09-16-2013, 09:24 PM
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Check vent hose at gas filler.
Later
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1987 Porsche 944S Club Sport @ +250Hp 0 to 60 in under 4.9 Seconds, 89 Carrera SE.
1987 Buick Turbo-T Lightweight "Great White", +500HP, TA49 Turbo.
http://www.blackbirdmotorsports.com, 944/951/968 & 911 Performance Solutions.
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Old 09-16-2013, 09:52 PM
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I don't know if 924's are like my 87 944 NA, but you said something like "no obvious leak below the car".

what does it actually look like near the fuel filter? specifically, the fuel-pump-to-fuel-filter hose, or the fuel-filter-to-fuel-line hose?

mine were horrific. it was not "obvious" until I got under there, and hoo-boy, talk about time to replace them.
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87 944 NA
Old 09-17-2013, 07:24 AM
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Thanks, guru944 and Bukowski. Having read the thread that John_AZ posted a link to, I'm thinking the fumes are more likely associated with the carbon canister and lines in and out of that. I'll be working on the car later today, and will check the other areas, which I have a feeling probably need to be fixed, too. I do know from the PPI when the car was up on a lift that the fuel lines around the fuel fuel pump aren't great

Based on everything I've read, too, I'm sort of expecting there's a minor crack and seep/leak in the fuel tank, too.
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Previously owned: 1977 924, 1978 911SC Targa, 1986 Carrera Targa
Currently: 1985 Carrera Targa, 1987 924S
Old 09-19-2013, 10:05 AM
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Old 09-19-2013, 10:05 AM
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