the engine sounds very groggy, it could be a number of things and is difficult to tell you exactly without physically checking your scooter over. It could be too rich oil or fuel mixture, not enough / retarded ignition timing, it could even be the stator or coil starting to break down. Thanks This was a comment made to me on a video of my bike i posted on a facebook page,how do i fix this problem, i assume new parts,would these solve the problem????
If the engine ticks over fine how can the spark not be good? Bad ignition parts will more likely not work at all than make your engine sound a bit funny. I'd look into the carb setup myself.