I just completed a tune-up on a "D" and I found after 30,000 only 3 valves needed adjustment and it was very minor. The valves don't change all that much. If you need a lot of adjustment to quiet a noisy valve I think you will find bigger problems. BTW I find the procedure in the manual hard to follow so I just make sure when adjusting a valve that the mate in the cylinder I am working on is open, that way I can be sure the one I am adjusting is closed. That ticking might not be a valve. When you get the valve cover off look for signs of past overheating, coked up oil, sludge etc. Check oil pressure and do a compression test to check the health of the engine. Mechanical problems with the motor are rare but if the engine was abused (overheated or run with low or never changed oil) all bets are off. David Teitelbaum vin 10757 --- In dmcnews@xxxx, "Eric" <ericp@xxxx> wrote: > I have decided to check and adjust my rocker arm clearances, since I > have this loud rocker ticking. (no, it is not an exhaust leak at the > gaskets...that was checked) > > I grab my trusty shop manual and open to section C:05:02 and :03, > figures 26 and 27 where Method One is laid out clearly. I interpreted > the instructions in the chart as: position cylinder 1 so that Intake > and exhaust rocker arms are "on the rock" or on the peaks, then