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#1
05-13-2004, 11:18 AM
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Just to clarify.... from my research on black smoke and valves
1982 300tdt engine
Symptom: black smoke on accelleration possible reasons: dirty air filter (replaced), mis adjusted alda (turned it down a bit but couldnt reach high speeds and had poor accelaeration), intake valves not fully opening, algal infection (looking for algacide now cant find anyone who has it). anything else- weak Boost etc..? starts up on first or second turnover idles fine as far as i can tell thanks will
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'73 VW camper '80 300td wagon 
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#2
05-13-2004, 11:23 AM
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you could try a marine supply store for agaecide.
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1984 300D Turbo - 231k....totalled 11/30/07 RIP
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#4
05-13-2004, 11:40 AM
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Quote:
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Alan Hamm '87 300SDL 277K Miles '89 560 SL 68K Miles
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#5
05-13-2004, 11:57 AM
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Try any Truck Stop.
Dave
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1970 220D, owned 1980-1990 1980 240D, owned 1990-1992 1982 300TD, owned 1992-1993 1986 300SDL, owned 1993-2004 1999 E300, owned 1999-2003 1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD 1988 560SL, 100,000mi, owned since 1995 1965 Mustang Fastback Mileage Unknown(My sons) 1983 240D, 176,000mi (My daughers) owned since 2004 2007 Honda Accord EX-L I4 auto, the new daily driver 1985 300D 264,000mi Son's new daily driver.(sold) 2008 Hyundai Tiberon. Daughters new car
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#6
05-13-2004, 01:52 PM
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Low compresion will do it.
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#7
05-13-2004, 02:25 PM
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as will a stuck open EGR
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Rick Miley 2014 Tesla Model S 2018 Tesla Model 3 2017 Nissan LEAF Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro Chain Elongation References
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#9
05-13-2004, 04:13 PM
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Yes, there can be low compression in at least one cylinder and the car could still start ok, so long as the glow plugs are working well.
Had that happen with the first engine I had in my 81SD. Engine would start just fine and run ok, except for a smoke cloud. Best to run a compression test and get the facts. New these engines will show 425 lbs compression. They will continue to run until the compression drops below the 225 range, but probably will not run well. I have been told just let em run until they get to where they won't start any longer. Not sure about that, but it can be done.
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#10
05-13-2004, 04:32 PM
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Soot build up in turbo?
Our 300 CD only gets used about ten miles per day in traffic week in and week out. Lots of soot on start up and acceleration. THINK this is due to soot building up in the turbo...seems far less pronounced if the car is given a good hard run on the highway from time to time.
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