gy6 "studders"

[DistilledMetal]

I have a problem that I have to fix ASAP. My Baja dune 150 starts to "studder" at about 5000rpm. Thought it was an electrical problem so got a new chi and coil and checked all the wires with no results. I went ahead and checked the valves, checked for leaks and cleaned the carb. I also fiddled with air/fuel mixture screw with no result. Any ideas?

[zach]

check ur float in the botom of the carbeurator it might be the problem and u can get a rebuild kit i had to