My engine came from the "junk" yard. I suspect that they pulled the distributor in the process of painting and put it back in 180 deg. off. I got nothing but "pop-n-bang" when cranking. I went with the lazy man's method of switching wire 1 and 6, 2 and 4, etc., on the distributor cap, instead of yanking out the distributor all together. Problem solved.
