I have a mercruiser 1998 v8 220 hp with Thunderbolt V ignition system. I have gone over the Seloc manual about this ignition and could not find anything about routine tune up procedures. They were mostly about testing procedures. I wnat to know what parts that need to be replaced on a routine basis as preventive maintenance. I have changed the plugs and occasionally sprayed carb cleaner and adjusted idle. Anyone knows maintenance manuals for this system?
