Hi. every one im new so please be gentle this is my first bike n althrought its put me through hell i still like it the first day i had it the motor blew up $3,500 later new engine but ever since i got it back half way throught the trottle is a flat spot were it donst pick up speed just makes a really deffing boring sound if anyone can help it would be great thanks in advance.
sounds like a carb problem. have a look at the threads on setting and cleaning carbs and it will give you a better idea