Are you saying that you put gas for a two cycle engine (mixture of gas and oil) in your rider? If this is the case it would have all the symptoms which you described. The fix is not hard. If you did this, do the following. First drain all the fuel out of the tank. Second, look at your engine oil. If it is above the full mark, change the oil and filter. Third, loosen the bolt on the bottom of the card, to get the fuel out. You don't have to remove the bolt, just loosen and let the fuel drain out, then tighten. Refill the tank with the proper fuel and start the engine. It is going to smoke for awhile until you have burned all the oil out of the muffler. If I have misread your thread and problem, please rephase your question and I will try again.