Hello all. My 84 300D Turbo has started to smoke a little more than I have noticed in the past. My oil pressure is good and everything seems fine. I have no history on the timing chain. I have no idea if has been replaced or not. The car has 245,000 miles on it. Could the timing be off due to an old chain and maybe the fuel is not all getting burned up? Any ideas? Thanks for looking and for any help that anyone can give.

What you say could very well be the case. Other possibilities include worn or clogged injectors, leaky turbo, and dirty filters.

Ensure that the AIR FILTER is clean or new
Add some type of diesel fuel additive.......Redline DFC.....Powerservice...etc.......even a gallon of hightest GASOLINE
Take the car out on the highway for SUSTAINED HIGH SPEED Italian tune up.
Blow out all of the carbon and soot from the bowels of the beast!
Always use a DIESEL RATED brand of oil...this will help to control soot within said engine!
Use the aforementioned diesel fuel additive at EVERY TANKFUL regularly.
Good luck and lets keep those oilburners humming!
Spo out 8)

75explorerxlt:

Timing chain stretch is easy to check with the head cover off. If you are due for a valve adjustment, that would be the ideal time to check the chain condition. Keeping a record of chain stretch will be a good indicator of how well your oil is working for you too.

If you are not due a valve adjustment, you may still want to go ahead and pull the cover to check the chain condition since it is unknown. Chains are alot cheaper than engines and head cover gaskets are a whole lot cheaper than engines.

-Scott