I did a valve adjustment about 3000 miles ago and they were not too far off even then.

As for the seals, I wasn't sure that they were copper. I actually thought that they were some kind of brass. Anyway, I got them from the dealer, so I am halfway confident that they are the correct type.

(EDIT) I just opened each injection line like psfred described to try to isolate the problem. When each nut was unscrewed at the fuel injector, the engine clearly slowed, by about the same amount for each line. As I undid each nut at the injector, the engine swayed more and more. Then when I closed it, the engine returned to its regular wide ossilations.

I am thinking that it is time to get the injectors tested. The return lines are pretty brittle (the couple that I haven't replaced)and it looks like none of the injectors have been out of the head since the day it was built.

If anyone has any other ideas, let me know.

alec

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84 300TD - 235k - Farbe "Surfblau" bought at 213k
87 300SDL - 131k - Farbe "PimpGold" bought at 115k
00 Klepper Faltboot Expedition Double