my blaster was running fine and then it started to sputter out and if you get it into to high of a gear like 3rd er 4th it sputters and quits it is a way nice bike and all but i dont se what is wrong could it be air flow or the carb??
please help

 

Your best bet would be to see if the carb needs to be cleaned. Then clean your air filter and put in a new plug.