Guys:

I will check with Hans next week (I have to pick up more parts, of course!) to see where the max fuel delivery adjustment is on the older pumps. The adjustment on the vacuum governors may be at the flap in the intake -- I'll try to dig up the old manual and look. It may be called the max rpm adjustment -- you set the no-load engine speed to 4500-5000 rpm (fun with no tach and scary!).

For sure extra fuel gives more torque, but usually increases fuel consumption at bit and makes more smoke.

I've only seen one number of nozzle opening pressure for MB engines, but that doesn't mean there isn't some variation -- think it is 1700-1800 psi.

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!