could be something as simple as incorrectly gapped plugs as well Sonny..gotta start in the basement and work your way up on this one..can't assume that anything is right and you'll have to check it all over. Might even be a tooth out on the distributor..bucket trucks do most of their time idling..you'll find 'em out there low mileage and cheap but they have 35,000hrs idling time on them
