OK, I'll work through all of the vacuum and pressure lines. The EGR has been removed in favor of one of Brian's kits and the ARV line has been plugged. I plan to remove all of the plumbing from under the air cleaner for those two. The air filter is new. The fuel filters have relatively few miles on them and performance has not changed since they were new.

Since removing the ALDA had no effect, the problem obviously isn't there, in which case I might as well put it back on. I'll first remove the seal and try a 1.5 turn CCW adjustment.

Thanks for the suggestions.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .343,000 miles Wife's car
2005 E320 CDI . . 148,000 miles My car
Santa Rosa population 177,300 (2026 projected)
Total. . . . . . . . . . . . 668,300
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970