My 1988 2-cycle just died while in use. While trouble shooting the cart, I found that there was good spark, that the plug was moist from gas, and compression was around 130#. The engine would seem to start, but there was not enough power to make the cart move. The strange part was that gas was blowing out of the air intake side of the carb. I removed the muffler next and then the cart started, and had power to move. I took a air hose and blowed air through the muffer. It seemed to not have a restriction. I then reinstalled the muffer on to the engine. Again the engine would not get enough power to move. I then again removed the muffer, and the engine would move again. I did at this point still see a much smaller amount of gas coming from the carb. air intake side. Could this be a reed valve problem, or should I just go out and buy a new muffer, at around $150 Thanks for any thoughts!