[culcune]

Sometimes, as I found on my then-near new TMEC 200, the cdi can be bad. I had ridden my old TMEC to over 10k miles, and I bought it used with unknown mileage, and then ordered my new bike. Maybe 2000 or so miles later, it died, and acted like a spark plug issue. Changed the plug, no luck. There happened to be a thread from someone having the same problem, and it was narrowed down to the cdi. Sure enough, I changed out the cdi from my old bike I still had sitting in my carport in pieces, and the new one started right up! I would not have thought about a cdi going bad because the old bike had no issues with it.

However, my bike died when this happened, not started, idled, and then died, but I would start with a brand new spark plug and do the suggestions that Ariel Red Hunter suggested.