I have a off brand Wildfire 50cc bike. I took the carb apart and looked at it but its clean as ever. Ive changed the oil. Checked the spark plug and everything and it still wont stay running. It starts up and idles for awhile then just shuts off. I have a video so you can see the problem. Any help would be appreciated.
It wont let me post the video so if you want to see it just PM me for it.
Unless your handle bars are part of the exhaust system I would say there is a strong chance that there might be a wiring problem if there is smoke from the kill switch. Sounds like you need to spend some quality time checking each wire and connection.