The bikes not getting fuel, mine did the same thing it starts up and revs super high cause its starved of fuel take the carb apart again and take out every jet you see. There will be the pilot jet, a very small one with holes in the top and on the sides, the main jet, it looks like a nut and it has a hole in the top, the jet needle, needle jet, basically everything you see that can come off. If it still doesnt run I dont know whats wrong. Sounds to me like carb issues though.