I was cleaning the valve cover the other day when this little voice reminded me that B18's should have the valve clearance adjusted about every 8,000 miles. (I must confess that I have never done this in all the years I have driven B18's) Anyhow, I get out the feeler gauge and set the valves per the Clymer manual at .020 (I was surprised that some of the valves had NO clearance at all), and low and behold I now have tapping sounds. Removed the valve cover again and repeated the process - found a valve or two that was a little (.022) loose. Tapping is much better, but still there.
Three questions come to mind:
1. How often should the valve clearances be checked?
2. What is the best setting for the valves?
3. How tight should the retaining nut be on the valve adjustment screw?
Any help will be appreciated.
Oliver
1966 B18B (1800S)
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