240Joe,
I don't have any abnormal smoke. I think I've done all that I can in regards to the injectors. I sure my injectors are probably worn out since they are the original ones and I have over 223K miles. The trouble started when I tried using a calibrated set of injectors. I thought that I would be able to just swap them out. It wouldn't run right and it smoked bad with the original IP timing setting. I then advanced the IP to get it to run better and it seemed to have pre-ignition symptoms. I gave up on that idea and put my original injectors back in and returned the IP back to its original timing mark. So now I just have to check my timing chain as you mentioned to see if its stretched beyond 5°.
The thing is, I don't want to dump lots more money into this car.

__________________
DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012