I think there is a screw to set the max fuel adjustment -- I'll check with my buddy the German MB tech and find out exactly where it is.

I do not think that there is an altitude adjuster on that IP.

Causes of excess smoke (defined as visible smoke in the rear view mirror extending 5 or more feet behind the car at about 50 to 55 mph in third gear, accelerator floored) are incorrect injection timing, stuck injection timer, max fuel delivery to rich, low compression, and bad injectors.

The old-fashioned cheap and cheerful test for injector problems is to pump the accelerator with the car out of gear and running -- intermittant clouds of black smoke means sticking injectors. The proper way, is, of course, to remove them and have them tested.

Fuel will make a big difference, too -- some brands make more smoke than others, although fuel treatment usually reduces this problem.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!