Called the Albuquerque, NM Mercedes dealership and talked with parts for a minute who knew exactly what i needed and transferred me to the service department. The parts guy is great but he just didn't have the service system access to find the timing for that camshaft. So, this was formerly the most helpful Mercedes dealership for odd questions I had on my old diesels. I've inquired a bunch of times about my old 1979 300D as well as my current 220D. This last call to the service department was unacceptable. After explaining my issue in detail, the service rep said, "You're free to bring it in for us to check it out and we'll correct your timing.You probably need to upgrade to a double row chain and need all the other parts in there replaced" I replied, "I have a double row chain and I'm going to do the work myself, I just want to know how the camshaft is timed since this code is not in the FSM." He said, "Well, there are forms online for that." And I promptly hung up on him.

I'll see if one of my contacts in north Jersey can help me with that code.

Now to the adjustment of the IP in tedd's question.

tedd, I removed one of the thick spacers under the diaphragm spring then have been tweaking the linkage to get the air/fuel proportion correct. I think, as the fuel impulse is a set amount per-injection, the throttle body linkage has to be adjusted separately. This is the one that crossed over the valve cover. I lengthened it this morning by one full turn on each end and she's smoking a lot less. There was some gray smoke but now it's only black after the car is warmed up. As the engine and IP are set nominally for sea-level, the lower air pressure at higher altitude will result in slight air starvation, even if the linkage is adjusted proportionally because of the log change in oxygen with altitude. Really, I need the engine and IP to be timed properly before I could get this mixture correct.

Thanks all for the help.

Phil Forrest

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1972 220D "Trudy," named by a friend.

"The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests."
Tom Abrahamsson