2017 Kawasaki Z125
Hi guys. I’ve got a 2017 Kawi Z125 Pro with what I believe is a 147cc kit (bought the bike used so I’m not sure on everything). The bike won’t start if it’s in neutral and kickstand up like it should, and the only way I can get the bike to start and run is if I pop start it in first gear and pull out the clutch while hitting the ignition switch. I can’t quite tell if the starter is working as it should (it sounds “fine”, just very loud because the engine doesn’t catch) and the bike sputters once or twice but doesn’t catch. Any ideas? Bad starter clutch? Bad fuel? Disconnected wiring harness? Battery seems fine too. My CEL is one and I did the code thing and as far as I know it’s flashing a “21” which I think is the crankshaft position sensor.