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  #1  
Old 08-25-2003, 12:53 AM
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Join Date: Jul 2001
Location: Old Lyme, Connecticut
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Changed Fuel Filters on 1998 E300D TurboDiesel - What a Mess!!!

I am sure I missed something but I changed the two fuel filters in the 1998 E300D TurboDiesel today, along with the oil. I am pretty good at getting the oil done without getting any on me or the rest of the car (I use a Topsider like device to suck it out the dipstick tube), but I made the biggest mess doing the fuel filters.

For some reason the fuel just started pouring out when I opened the system up, and kept pouring out until I had it all buttoned up. I was working pretty fast but it still spewed about a quart on the driveway. Is there some way to prevent this? I spent an hour washing the driveway off, and the yard still smells like Diesel fuel.

The good news is the prefilter was pretty clean, a little discolored but not full of junk. Another observation was the hold down mechanism was so loose I thought I had the wrong size wrench. It takes a 10 mm wrench, but when I put it on the bolt head it felt like it was too big and just spinning over the corners and flats. So I tried a 9 mm socket and that was too small. So I tried it with my fingers and it came right out. I snugged it up at reassembly and it is a 10 mm hex head.

Well, if anyone has changed their W210 fuel filters with the prefilter integrated in the main filter housing bracket, let me know if there is something to do to avoid having Diesel fuel run all over the place. Or what you do to avoid the problem. Thanks, Jim
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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #2  
Old 08-25-2003, 01:10 AM
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Join Date: Sep 1999
Location: Miami, FL
Posts: 645
If there is a plastic or rubber fuel line involved as on my cars, just squeeze them shut with a spring clamp. They sell these wherever they sell tarps, and they last forever and don't even cost much.

Harbor freight sells assortments of them at the best prices that I have heard about.
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Semibodacious Transmogrifications a Specialty

1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)

"Time flies like and arrow, yet fruit flies like a banana"
---Marx (Groucho)
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  #3  
Old 08-25-2003, 02:56 AM
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Join Date: Jul 2001
Location: Old Lyme, Connecticut
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Richard Eldridge,

I guess I will be investing in some of those clips. I was surprised by the leakage, as I have done this countless times on 220Ds, 240Ds and a few 300Ds of the older vintages and never had this happen. Yeah, a little fuel spilled but a well placed plastic bag collected most of it. This was another story. An order of mangitude more leakage, and it was coming out of the lines to/from the filter bodies. Next time I guess all the lines will be pinched off. Thanks, Jim
__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #4  
Old 08-25-2003, 07:28 AM
Ockman's Avatar
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Join Date: Jan 2000
Location: Valrico FL
Posts: 171
I've changed my fuel filters twice and didn't experience the problem you described. I let the car sit for a few hours before changing those filters and maybe that has something to do with relieving some of the pressure in the system which you describe. The only surprise I encountered was the prefilter when purchased new does not have the required 0-ring with it. You must purchase it separately and I ended up using the old one again. It will not start without that o-ring since air gets in the system. Good luck!
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99 E300 133K
98 ML320 99K
87 Saab 900 Turbo Conv 123K
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  #5  
Old 08-25-2003, 08:44 AM
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Join Date: Jul 2003
Location: Ocean Isle Beach, NC
Posts: 2,410
My experience was the same as Ockman's. I did mine cold and had no fuel spillage at all. It all went very smoothly. Maybe removing the fuel filer cap would help relieve the presssure.

Len
'99 E300TD 55,000 miles
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  #6  
Old 08-25-2003, 08:56 AM
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Join Date: Jul 2001
Location: Old Lyme, Connecticut
Posts: 3,596
Thanks for the replies. I will do the job with the engine cooled off and the gas cap off next time, with some clips to pinch off the fuel. I think I will also do it with the nose up hill.

By the way, I got a package of O-rings in the filter box from the dealer, but, since I had heard they don't usually come in the box, I bought a set of separate ones. Well, the ones in the box were thinner than the ones I bought, and the ones I bought were much closer to the thickness of the ones I took off. So I used the O-rings I purchased separately. I will bring this up with the parts guys when I get my next one.

Thanks again, Jim
__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)
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  #7  
Old 08-25-2003, 09:49 PM
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Join Date: Aug 2001
Location: Milford, DE
Posts: 1,413
It also helps if you wait until your tank is empty before changing the filters. If the tank is full (or near full) gravity will do a pretty good job at getting the fuel all over the place.

Tim
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