Hmmm. Youi are getting excess fuel then at startup. Could be a leaking cold start valve dripping fuel into the intake, a bad fuel pressure regulator doing the same thing, a bad EHA, or a bad fuel distributor.

You will have to investigate those possibilities.

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!