was on my way home from class a few days ago. i stopped at a red light. the puch was at idle very nicely. then all of a sudden it cut off. no putter or anything. i check all electric connections everything seemed ok. but she wouldnt start. fuel was flowing ok. i couldnt figure it out so i locked it up and walked home. i towed the ped back and after inspection / carb cleaning/ plug clean and check. it still wouldnt start the engine only fired one or two pops. upon farther inspection i noticed the exaust gasket had a piece blown out. i replaced the gasket and tightened everything up but still no luck. any ideas???? please thanks.