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Gas Smell - Cracked Expansion Tank
I have been chasing down a persistent gas smell in the cabin of my '84. Thought it might be the tank to fuel pump hose but that looked dry. Changed the hoses in the frunk that attach to the expansion tank but still no luck. Then, running out of options, I decided to pull out the expansion tank and flipped it over. It was cracked in several places -- not what I was expecting to see. Anyway, for those dealing with gas smell issues, you may want to give your expansion tank a close look.
Last edited by isby; 12-12-2022 at 09:00 AM.. |
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12-12-2022, 08:57 AM
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Kind of Blue
Join Date: Sep 2010
Location: Delaware
Posts: 2,308
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I just thought smelling gas was a fixture of these cars?
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1971 911T w/ a 2.7 (ITBs, EFI, a bunch of other stuff, 2180 pounds with fuel) 2024 Ford Bronco Raptor |
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12-12-2022, 09:08 AM
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PCA Member since 1988
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Ditto for me. I have a 1973T CIS car, and the expansion tank was up under the windshield on the driver's side. A real PITA to get to, as I had to remove the left hood hinge to get at it, and pull out the oil gauge to get access from that side. It had several cracks, that I sealed up with silicone sealer. We'll see how long that lasts...
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12-13-2022, 12:58 AM
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Registered
Join Date: Mar 2002
Location: Dunstable, MA
Posts: 657
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So I am not alone, nor imagining this.
84 Carrera 3.2 Cabriolet Where are these tanks located? I’m probably going to open a can of worms and replace all rubber hoses in the front, along with any tanks that need it. It’s a smell that is not getting better, and seems to be when running, with a fresh top off of fuel. |
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05-20-2023, 09:16 AM
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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,643
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This post may be helpful: Fuel tank venting system question
From this thread: Fuel tank venting system question
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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05-20-2023, 09:38 AM
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As far as I know, on the 3.2 Carrera, there are two plastic expansion tanks that are part of the fuel system (not including the carbon canister). One is in the front left wheel well sitting directly above the windshield washer reservoir. The other is located in the frunk. My gas smell was originating from the tank in the frunk, which was cracked on the underside. Once I replaced this tank, the gas smell was gone. I also replaced the rubber hoses attached to this tank for good measure.
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05-20-2023, 02:08 PM
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