RE: Engine cutting out???
I dont know a way of checking it. usually when it is bad. on stock needle setting plugs will foul out very easily. also when trying to start your engine it'll back fire like the timing is off. those are 2 i know of personally for symtoms of a bad coil. i had a coil go bad on me with a brand new 26 Zen just past break-in, so it does happen.