Leaderboard

Sounds like wiring gremlins. The starter button would only work regardless of key position if it were wired around the key. If key was off and button still worked it would likely not have any spark. I would put the original CDI back on because I am assuming you bought a $30 chinese one? Those only work about 10% of the time. My first step would be try original CDI and then move on to a wiring diagram and work through each wire. Those are really simple bikes to work on, I've had several. This is a youtube video but has the clearest wiring diagram I can find. Just pause it and screenshot.

But it’s up and running good now. Upgraded it a little since then too received_119527162754816_1.mp4