I am returning to ask a follow up question concerning noise in engine.
I have a 1989 300sel. I had valve/rocker noise so I removed valve cover and the oil distributor(piece on top of cam with little holes-3 small bolts to remove) and cleaned it up/out or so I thought. Anyway there was crap on the rocker assembly so I cleaned them up, put oil on all cams and replaced everything. Started up and no noises at all! Thought I cured my problem. But, alas, after a few miles, the noise returned.

Question....does this mean oil is blocked somewhere, not allowing it to get to rocker assembly? how does the oil get distributed? What can be done...short of overhaul?

Thanks in advance
Warren