I've got a 1991 Honda fourtrax 300,2x4, that I'm going thru the same no spark issue. Ran great, started it and walked to garage and back and it had died. Would not start again, no spark. I really dislike wiring and electronics. I need troubleshooting for dummies, lol. I got a new coil and cdi, with no luck. Got power to the black and white wire on two prong plug to cdi, but no power at coil. Checked continuity on the stator plug. I'm getting 1.1 ohms ( if I have setting of multimeter right?) between all three wires to stator. Not sure if that's in tolerance? Anybody able to explain how to test out the wiring and components to a less than adequate electronics guy? I'm a decent shade tree mechanic, and I will figure this out eventually, but may end up buying all new stuff and find out it was something simple. Luckily I have a Kawasaki prairie 300 that's a good backup, with no issues, yet! Anyway, great to be on forum with you all, thanks, jd