Hi all. Well I'm back from Oregon and a little upset. The Cadillac got wrecked and my tapping came back. So the other week, before I left town, I did my valve adjustment on the M20 and she improved. Coming up I5 last night i heard the dreadful tapping super loud. I pulled off the hwy and was like damn... I decided to pull the oil cap for a second and guess what... I didn't see any oil on the valve train. Now unless I have completely lost my mind there should be oil moving across the valves right... Is there a coming blockage area in these cars.