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Old 10-06-2003, 12:48 PM
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Join Date: Oct 2003
Location: London England
Posts: 2
Question W129 Fuel Leak

I have a 96 SL280 and after I turn it on from cold, after a week or so. I notice a fuel leak just infront of the rear right wheel. Around the tank area. After I drove it, it stopped and it didnt leak at all.
The same thing happens everytime I leave the car for a while and then start it. Anybody.. any suggestions??
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Old 10-06-2003, 09:37 PM
Gilly's Avatar
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Join Date: Mar 2001
Location: Evansville WI
Posts: 9,616
I'm not familiar with that exact model, but on similar year 129's here in the US (SL500, SL320) I've found a few fuel leaks in this area. Caused by a loose fuel hose at the fuel filter. I simply replaced the factory "crimp" style clamp with what we in the US call a worm gear style clamp. Possibly in England it's called a "jubilee" style clamp? There is a plastic panel under the car in this location, you'll probably see fuel dripping at a drip hole on the botton of this panel. Remove the panel, it's held on by 3 or 4 plastic 10mm nuts, and you'll be able to find the leak.

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Old 11-04-2003, 05:32 PM
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Join Date: Apr 2001
Location: Seattle
Posts: 5
I have exactly the same problem with my 93' 300SL (W129). If not driven for a while whan started up fuel just pours out from the plastic cover. I was wondering is you discovered anything after taking the cover off? I will try to get mine off tonight and have a close look.

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Old 11-04-2003, 06:03 PM
Pete Geither's Avatar
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Join Date: Feb 2002
Location: Western Pa.
Posts: 2,417
Just fixed that same exact problem. The fuel filter was leaking at one of the seams. Replaced it and no problems since. Makes me think Mercedes had a run of bad filters as this seems to be more and more of a common problem with these cars. My car has 36K on it.
95 SL500 Smoke Silver, Parchment 64K
07 E350 4matic Station Wagon White 34K
02 E320 4Matic Silver/grey 80K
05 F150 Silver 44K
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Old 11-04-2003, 08:34 PM
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Join Date: Apr 2001
Location: Seattle
Posts: 5
Thanks for the info! I will order a replacement filter anyway. Mine is a 1993 300SL with 89K miles on it.
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