... thanks for catching my gaff for I seem to not "Ctrl-Alt-Del" my brain some of the time before I shoot off my advice. I should have reset my mind as to the YR/Model that I was talking about before POSTing.

Yet the advice still stands, particularly in view of the questionable diesel knowledge of the dealer "ramjensen" reports he purchased from in his last POST above. Yes, I know that these cars will run quite well when their IP's timing if off by 4 deg and in my 240D's case it ran with significantly more power with the IP set at 20 deg. BTDC [only ~25K of chain wear] than it does now set at 24 deg. BTDC... but I'm now getting 15% better fuel mileage and I've adapted to having even less power in my 67 H.P., tire smok'n hotrod!

Can anyone comment on power differences when one adjusts/corrects the timing say about 4 deg. on a turbo-charged 617 engine?. Soon I will most likely be making such an adjustment on my Son's 300D [na] engine and hope for a similar fuel savings improvement. Eventually I also want to go back to this IP timing issue and try the MV thermocouple method of doing a final timing adjustment.

Sam