OK guys. From what I've read and understood normal wear of the pump makes adjusting the ALDA a common and often necessary procedure on these older MBs - and adjusting it IS the way to address the problem.

Apparently this is all wrong, so tell me, what is the real underlying problem and the correct way to address it.

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown