1981. New plug, have nice blue spark, wire clipped and redone. carbs cleaned, new gas...cleaned air cleaner...bought it a week ago...never heard it ran...pop pop pop is as close as it gets, usually on thefirst few kicks. it seems to have good compression...but I need to check it with a gauge in the spark plug hole to be sure? any1 know? any other things I can try? thx.