I just bought an 85 300SD. The guy that sold it to me said that it had a ploblem starting. He said that he had, that day, towed it from the mechanic shop. Sure enough it started right up, idled good, and I took it on a test drive and it ran smooth. The next morning 7am i tried starting it and it wouldn't. Naturaly I assumed that it was the glow plugs....I replaced them all. It will start when the outside temperature is warmer but not early in the morning. I tested all the old glow plugs and only one of them was bad. I have power to all G.P. and I tested the new ones to make sure that I was getting ground from the engine to the G.P.....so i know that the glow plugs are working. I can hear the glow plug relay switch off after about 30 seconds. The guy replaced the old battery a month ago and I tested it today and it held 12Volts fine. It has 230,000 with a working odometer and other than the bad starting, is in really good condition. It has the oxidizer trap and some blow by. I have seen more blow by in other engines and they run fine. What could possibly be the problem with this car!!!!??? Thanks, Stephen

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68 250s SOLD
78 300d non turbo SOLD
1980 240d manual SOLD
1981 300SD 360,000 miles I think she's doomed for a parts car but has a good engine SOLD the engine to spamman
1977 300d non turbo SOLD
1985 300SD california car
1978 240D Manual