I did post on my own, under "Tapping Engine noise - Help!". It was suggested to me that it may be the bad knock sender.....by you! (LOL)
Thought the diagnostic might shed more light. Besides, it's neat, have to play. I guess a 16 year old truck (which has probably been abused by previous owners) is entitled to a few quirks. The only thing is by the time I'm satisfied with it's performance, it will be better than showroom-new. It's just the way I am.
BTW: Thanks Koco1, you always seem to be helpful to us newbies.
D'mon
