The spark plugs are new and spark when grounded and turning the engine over so I'm confident that the electrical system is working fine. I've done all that except checking the bowls for gas in the carbs after the rebuild. I'm not sure how to check that the jets are all open. The rebuild was done...
I was having problems with the engine missing under acceleration, that eventually deteriorated to running on three cylinders. I took it to a Honda shop in town and the mechanic said it needed a valve job. I wasted $1700 on that. It ran the same, but added backfiring to it. I tightened the...