May I assume that you had the Trap removed by MB under the recall program?

Camshaft timing is correct? Injection timing is correct?

You are using 50/50 mix of water and antifreeze?

Cooling system is properly bleed of all air....ran heater full on?

20-50 synthetic oil used?

Just a few suggestions.....

ebiker

1963 190Dc, rusted away.
1974 240D, rusted away.
1977 240D, the "money pit."
1981 240D, accident victim.
1985 300D, traded away, sob.
1987 300D, son of "money pit."
1991 Audi 100...good in snow.
1993 Audi 100S..grandson of "money pit."

1977 BMW R75/7, 'ol reliable.
1987 BMW K-100RS, fast 'n reliable.