Date registered: Jan 2003
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RE: Carbon from my tail pipe
how many miles are on the engine?
It's possible that the diesel purge has removed any carbon deposits which were at places where they functioned as an oil seal. think piston rings, cylinder walls, valve seatings, etc. By removing all the deposits, you let oil run around more freely, sometimes places it shouldn't run.
perhaps you should try to put in thicker oil, such as 20W50 or SAE30 and see what happens.
The hard starting may suggest compression loss. This can be caused by worn out piston compression rings. If the engine was run with a really dirty, or even no airfilter, the cylinder walls may be warped out.
1991 MB 300TD: daily driver, going strong at 474.000kms
1991 MB 190E 1.8
1983 MB 190E 2.0 AMG 145PS: Restauration project up next...
2001 Alfa Romeo 147 2.0 16V Selespeed