have a 1992 2.5 turbo diesel.
when starting cold from sitting overnight she runs rough blows white smoke until warms up. then she is fine

i have done the following checks.

swapped air mass flow sendors
swapped vacuum modulators
replaced all 5 glow plugs
adjusted rack dampening screw
cleaned crossover pipe and wastegate area

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1994 S-350 6cyl Turbo Diesel 158k

1998 300d 6 cyl Turbo Diesel 143K

1993 2.5 124 Turbo-Diesel 236

1990 2.5 124 Turbo-Diesel 228k

1983 SL-500 EURO W/HEATED SEATS 40K

SOLD 1977 Jaguar XJ6 Coupe Antique Roadster 85K

SOLD 1993 2.6 6 cyl 190 E 150k

SOLD 1992 2.5 124 Turbo-Diesel 204k

RIP 1992 124 300 TD 265K OIL PUMP QUIT @ 85MPH