I just purchased a brand new pre-assembled Coleman CT200U-EX mini bike. I'm a newbie with this.
I've only ridden it about 3 hours or so at this point. This week its been acting up. Today while starting, with the choke on, it doesn't want to stay running. It's putting out some black smoke and I can see where the valve cover is, its a little discolored. I don't know if it's getting hot there or if it's from the exhaust. I have tried everything. I have tested the spark plug as well as the gaping, (has spark) changed both the oil and fuel, checked the air filter (super clean). Something is very off. I am attaching the picture where I am pointing to the discoloration. Any recommendations? This unit is technically under warranty. I also have a small video
Please and thank you!
