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Old 09-15-1999, 10:04 PM
Dan
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I have an 82 300SD which consumes 3-4 quarts of oil a week (245,000 miles). I have owned the car about 2 years and it has always used about 2 quarts per month until shortly after I had a used injector pump installed by a garage. The car now smokes (black) a lot more than it used to. The mechanic says the engine is shot and wants to due a $4000 rebuild.
The car starts easily and has just slightly less power than it use. Could the injector be causing the large amount of oil consumption?
  #2  
Old 09-15-1999, 10:44 PM
Jason Alexander
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It's possible, but not likely. If the engine starts easy and has decent power, it's possible that the valve seals or valve guides are shot. Another possibility is the carbon seals on the turbo.

------------------
ASE Master Technician, Lead Technician for Deutsch American Inc. Over 6 years of Import experience-specializing in German Automobiles.

  #3  
Old 09-16-1999, 10:24 PM
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Location: Suwanee, GA, USA
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Another possibilty is that the injection pump is pumping too much fuel and all of it is not being burned. The left-over fuel will thin out the oil and cause it to be easily consumed by the engine.

------------------
Benzmac:
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
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  #4  
Old 10-04-1999, 03:18 PM
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The unburned fuel would also explain the black smoke, right? Black smoke means unburned fuel, white/blue smoke means burning oil.

- Nathan
'83 240D
  #5  
Old 10-04-1999, 04:28 PM
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Join Date: Aug 1999
Location: Cincinnati, Ohio
Posts: 1,935

You know, if the car is in really nice shape, I'd just go ahead and order a reman engine from MB and forget about it. I know that if I ever have any kind of major oil consumption problems with my SD (W116 chassis) or anything like that, I am going to just do a reman engine either from MB or Metric Motors. Remember, reman engine would be much cheaper to do than buy a new car!

------------------
Rgds,
Aaron Greenberg
MB technician
'67 250SE Cabriolet
'77 450SL
'79 6.9
'79 6.9
'80 300SD
'85 380SE
'89 420SEL
'93 300E 2.8

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