Its spring again and i felt like riding my bike this weekend. I cleaned out the gas and put a new spark plug. Just a side note my kickstarter doesnt work. When it was time to push start it, just as i was letting go of the clutch to start the engine, a loud BANG spark came from the muffler. The engine has good compression, but im not sure what the problem would be. It was running fine last fall when i last rode it. Any help on how to fix this would be great. I believe it might be the points that fouled but im not sure. Thanks.