Yesterday on my way home from work a heard a tapping like sound from the engine for few sec and then it stopped. "Do I have a bad lifter?" was my thought. Later that evening it was much louder, So I pulled the Sundance into the garage, removed the valve cover and I took a picture.
https://drive.google.com/open?id=0B3...4xVVc2ekRzdFow
The valve cover was not off since Jan 1989....