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Join Date: Jul 2005
Location: Houston, Tx.
Posts: 139
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Gas smell 85 911 - List of possibilities?
I need some help if someone has the time to list the different sources of gas fumes in the Cabin starting with the easiest to check / fix down to the most expensive / difficult.
I do not have the money to take to a shop to spend hours searching for same yet I am afraid to drive my car. I know this request could take some time to reply too but that way I can start at the bottom and work my way thru the list of things I can do (afford) myself. Thanks again for your time. Booney1golf 1985 Porsche 911 Targa - No substitute |
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02-02-2006, 10:48 AM
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Join Date: Feb 2003
Posts: 572
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Check all the hoses and fittings around the gas tank under the hood. I had the same problem with my '83. That was the solution for me.
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02-02-2006, 11:02 AM
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Posts: 304
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also check where the fuel lines leave the fuel pump, they are rubber there (at least on my SC) and over time will leak, cost me about $80 at the shop to get repaired.
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Jim |
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02-02-2006, 11:12 AM
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Join Date: Dec 1969
Location: Lac La Biche, Alberta, Canada
Posts: 951
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Does it only occur when you gas up? Is it there when you get into the car or do you notice it only when it is running or just parked?
If only when your tank is full, check the overflow lines under the left front fender. If worse running, check the fuel line from the fuel filter to the engine. Tim
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1986 911 Cab 2008 Audi A6 |
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02-02-2006, 11:22 AM
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Join Date: Sep 2001
Location: Kerrville, Texas
Posts: 1,021
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Mine was the original gas lines in the trunk and the overflow line. I replaced all the lines in the trunk (easy DIY) and the over flow lines. Also check the plastic overflow tank for cracks.
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1987 911 Guards Red Targa, nearing 200,000 miles, lowered, 7's & 8's, 964 grind cams from John Dougherty, A.P.E. Mass Flow Sensor with chip to match, cat bypass, strut brace, dual out muffler. Will consider newer model in 8 years when I turn 75 and then maybe not. 2012 BMW 528i (wife's) 2007 Toyota FJ (rain and off road days) |
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02-02-2006, 11:31 AM
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Location: RI
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Also check for signs of leaking around the sending unit gasket on the top of the tank.
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Silver 1980SC Euro coupe |
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02-02-2006, 11:35 AM
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Join Date: Sep 2001
Location: Kerrville, Texas
Posts: 1,021
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Good idea Ron and it reminds me to mention checking the gas cap seal. Mine was shot years ago and after I replaced it the smell ended...for a few years.
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1987 911 Guards Red Targa, nearing 200,000 miles, lowered, 7's & 8's, 964 grind cams from John Dougherty, A.P.E. Mass Flow Sensor with chip to match, cat bypass, strut brace, dual out muffler. Will consider newer model in 8 years when I turn 75 and then maybe not. 2012 BMW 528i (wife's) 2007 Toyota FJ (rain and off road days) |
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02-02-2006, 11:44 AM
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I had a broken fuel injector that leaked fuel onto the manifold. The fumes got pushed into the cabin via the rear blower. The injector body seperated when I rotated it out of the way while changing my spark plugs.
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Thank you, HFR_Racer '87 930, 3.3 liter, K27 hybrid, Kokeln IC, Andial, B&B, Borla, 17" Supercups. |
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02-02-2006, 06:33 PM
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Location: Houston, Tx.
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Thank you for all of the resonses. I have changed the gas cap, the hose from the gas tank to the plastic tank, from the plastic tank I have replaced the top hose. I am unsure where the bottom hose coming from the plastic tank goes it appears toward the left front tire and maybe to the back of the car toward the engine. I have not replaced this hose as it may be more than I can handle. I am unsure.
If I get in the car and do not turn on the a/c fan then I do not smell it. If I only have on the defrost or heat I do not smell it. But when I turn on the A/c fan it is very strong. I'll keep looking. Booney1golf 1985 Porsche 911 Targa - No substitute |
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02-02-2006, 06:36 PM
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Join Date: Nov 2000
Location: Dallas
Posts: 3,581
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The fuel smell in my '88 turned out the be the line running between the two pressure sensors at the front of the engine (near the firewall). Very inexpensive part on Pelican and sort of a PITA to replace. I recall having to use some contortion moves and trying a number of wrenches. It was really easy to check with the engine running since it suddenly got worse and I could actually see the tiny stream of fuel coming out. This was probably a pretty dangerous situation.
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Buck '88 Coupe, '87 Cab, '88 535i sold, '19 GLC 300 DD Warren Hall, gone but not forgotten |
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02-03-2006, 07:34 AM
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Location: Greater Metropolitan Nimrod, Oregun
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look near the a/c ducts...
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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02-03-2006, 10:23 AM
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You may also want to check the fuel pump which is located under the front of the car. It is concealed by a metal plate, you will need to put the front up on ramps to access the plate (held by 4 bolts). I too had a gas smell, would come and go. When we took off the plate we found the fuel pump was wet and leaking. Replaced it and away went the gas smell. Just a thought.
Good luck. |
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02-03-2006, 11:05 AM
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Green Skull 006
Join Date: May 2002
Location: Rhode Island
Posts: 2,040
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Use the search and put in "gas smell". There are many threads about places to check. Good luck.
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S Reg 823 R Gruppe 246 1955 pre-A Carrera Speedster...x 1974 leichtbau..."Sascha" "It makes me sad. Our cars were meant to be driven, not polished" - Ferry Porsche while surveying a PCA Parade concours field. |
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02-03-2006, 02:17 PM
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Hot Tomale
