I just adjusted the valves on my 77' 240D using the special "Hazet" wrenches, and all went smoothly...my intake valves were all too tight, but my exhaust valves were all still within spec...not sure if that's normal or not.
Anyway, I adjusted all of the intake valves to .10mm as indicated on the sticker on the radiator support. Starts up and idles more smoothly now, but I swear it's lost about 1/3 of it's power! (and we all know how slow these cars are to begin with) It could barely muster 25MPH up a moderate incline on a side street.
The thing just doesn't MOVE. The power was just barely adequate before...but now it feels almost undriveable.
Could adjusting the valves have caused this?? I can't personally see how this could be a result of the valve adjustment, but maybe I'm missing something.
Primary fuel filter has some dark specs in it, but nothing shocking, and it appears to be flowing...It idles fine, and doesn't really smoke at all under acceleration.
I clocked the 0-60MPH time at about 36-40 seconds depending on the grade.