1983 300D engine with a 1984 300SD IP.

The PO removed and reinstalled the IP. This thread makes no mention of what to do if the assembly of the IP to the engine is incorrect and the drive splines are misaligned by one or two teeth.

I took the car to a very experience mechanic to time the IP. He pulled/adjusted the top of the IP towards the fender well (retarding the timing) AS FAR AS IT WOULD GO.

The current symptoms are:
1. Engine bucks hard when first started at cold idle, about 700-800 rpm. Runs more smoothly when cold when throttled up to ~1000 rpm.
2. White smoke when first started. Goes away when warm.
3. Runs smoother when warmed up, especially when throttled up to 1000 rpm, or trans is put in Neutral.


Did I give enough info above to diagnose the problem and get an answer on what I should do?

Thanks!

__________________
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1st MBz: 1982 300SD
2nd MBz: 1987 300SDL
3rd MBz: 1995 S420
4th MBz: 1987 190DT
5th MBz: 1984 300SD w/1983 300DT engine
6th MBz: 1999 C230k I'm 3rd owner, got it w/57,235 miles.
and manages Mom's 2007 R320 CDI