I just had the vacuum pump on my 1982 300TD rebuilt because it was sucking oil. Recently I've noticed that after driving a long time, there is oil under my car in several different spots. I jacked up the car to look under it and saw that there was oil everywhere. I began looking through the forums for help and saw a few threads about if you have oil in your air filter/housing that it could be a faulty oil drain gasket. Sure enough I have oil and chunky stuff in my air filter and its housing. Can someone please suggest some things to check out before bringing it back to my mechanic?? Thanks!

Check the oil/air separator. Ii uses "O" rings to seal at the air cleaner and the oil pan. Also Dave Morrison, IIRC did a write up on replacing the check valve that is at the oil pan/block connection. Also check the turbo oil drain as well.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Also, if you have an early vacuum pump, it can put oil into your air filter if the diaphragm is leaking. The early pump has a clear plastic line from the pump to the top of the air cleaner. Is it possible the pump diaphragm was not actually replaced?

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13