Jim,

The exhaust has to be open, the engine is throwing massive amounts of smoke out of the tailpipe as it is revved.

Vstech,

The oil level is right on, the a/c compressor has not been attached for years. The alternator may be frozen but I doubt it. I don't remember the charge light coming on during all of this, nor did I hear any squeeling or smell any rubber burning. I will have him check the alternator real quick, though. What would hitting a dip have to do with the way it is running? I will have him check that also, if you give me a direction.

Tom

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1993 300TE
1984 300D
1984 300SD
1976 BMW R90S