Why does the motorcycle still smoke after overhaul?

First of all, did you burn oil badly before? If it's bad, the master told you that there will be oil residue in the exhaust pipe, and there will definitely be smoke at the beginning after the overhaul, because there will be a certain amount of oil residue in the cylinder during assembly, but you later said that the power is not good and there is a click. You'd better call the master of other stores to check this. I guess it is probably not installed (ignition piston ring timing, etc.). ). Your situation is really like the wrong timing, which leads to poor ignition and random ignition (usually only a few teeth may be wrong).