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126 fuel sender location
I took the time to try and track down a very minor mystery fuel leak today that is originating somewhere behind the back seat, as the leak is evidenced on the underside of the car, forward of the rear axle and just behind the exhaust resonators. It’s not leaking enough to leave a mark on the driveway, but the underside of the car in this area is coated with WVO.
I wanted to expose the fuel tank to see if maybe there was a leak in it or if fuel was getting by the o-ring on the fuel sending unit when I have the tank full. In preparation I searched the archives and printed off reams of paper including http://www.peachparts.com/shopforum/showthread.php?t=92826&highlight=240D+Fuel+Tank+removal+cleaning and http://www.peachparts.com/shopforum/showthread.php?t=102003&highlight=W126+removal+1st+aid+box as well as http://www.diymbrepair.co/Sender/ All of these talked about accessing the fuel sender through the first aid box. Well on my car the fuel sender is accessed from behind the seat back, not through the first aid box. I sure am glad I stumbled across that access point before removing the parcel shelf in order to remove the first aid box. I never did find the leak even after exposing the entire fuel tank. With the exception of the underside of the car, everything is dry including the fuel lines under the tank. I may be seeing some seepage around the nut of the fuel strainer, but I can’t imagine a bad o-ring there would cause the wide spread mess I’m seeing, and besides, it’s not that messy at that nut. The day wasn’t a total loss. I changed the oil, put some pool noodles in the back seat (what a huge improvement) and learned a little bit more about the car. Maybe this post about the location of the sender on this model will help out someone as ignorant as myself. Here's some pictures of the fuel sender access:
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Pictures of the MB: http://s230.photobucket.com/albums/ee41/EricandRobyn/1981%20Mercedes/ 1981 300 SD with a Goldenrod water block and Injetor line heaters. EGR is missing 1999 F-350 with HP X-over, Dahl 100 Fuel Filter, Coolant by-pass filter, CCV mod, Tymar intake. Both on single tank WVO blend |
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Thanks. This was a big help.
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83 300TD (need rear wiper assembly dead or alive) 84 300SD Daily driver 85 300TD almost 400k miles and driven daily. 98 E300D *sold 86 300SDL *sold and made flawless 10 hour journey to new home. |
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W126 fuel sending unit
I ran into the same problem on my 1991 350SDL. I've looked all around the trunk area under the first-aid kit. Looked at the pic of others removing it, everything. It was driving me crazy. What a big help. Thanks, Robert
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Huh... waddya know. I just removed my rear seat to do some CV boot work and didn't see anything. Of course, I wasn't looking for anything in that department and I didn't take the cover out... good to know
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[/SIGPIC]~cirrusman 1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang" [SIGPIC] 1983 Toyota Tercel (Tommy, The little Toyota that could) 1965 Ford F100 (Grandma Ford) 2005 Toyota Sienna (Elsa, Wife's ride) Gone: 1988 Toyota Pickup 2004 Subaru Outback 1987 Cadillac Fleetwood Brougham 1986 Volvo 740 GL Station Wagon - Piece of junk. 1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P. 1987 Pontiac Fiero GT |
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