Thanx Merle, have tried the spraying around intake, did not notice any rpm increase.
It is like 20 below here right now, and getting colder, by the New York second. so have not had any time to check much out on this problem.
I have been stripping the fropnt end of the truck, in my shop which is insulated, it is not bad, but have not had the heat running much in there today.
I did go and try and start the truck, ran the $hits, immediately shut it off.
I then pulled sparkplugs, all severely carbon fouled, so cleaned them off. When I went to install the #3 sparkplug, the top of it twisted off, not sure if it had a crack, but it twisted off. In my 30 + years of wrenching and changing spark plugs this has never happened, I have dropped and broke plugs, but did not break the tops off any by placing the socket over and just starting to turn it tight.
Started engine, ran fine, so I dunno yet, what is the problem.
I do plan to install new points, another this time brand new coil, and new spark plug wires.
I really don't have a clue yet what is going on, but I am having fun, and learning something too......take care