95 Mach1. I pull the plugs and pull it over. It only sparks about every third or fourth pull of the rope. When it sparks, it is a full, blue spark. When it doesn't spark, it is absolutely zero. If I put the plugs back in, it will try to backfire about every 5th pull or so. I have never had spark problems before on this machine but it started running like this on the last ride of last season before I parked it.

Any ideas? Can I test these components myself with a multimeter? If so, where to start and what specs??