A bad accumulator or a minor fuel leak on the supply side will cause this problem, although it will usually cause hard cold starts as well.

Requires a system pressure check to diagnose.

I've also seen a hard hot start problem caused by bad idle control valve hoses -- instant stall when releasing the key from the start position. Check for vacuum leaks -- an overlean condition will cause hard starts but will run OK once the computer is controlling fuel mixuture.

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!