what can cause that? i know im being general, but the 1977 Puch Maxi worked fine and now it has no spark, i checked the wiring and everything seems to be attached. what happened before the no spark was this: i was at a freinds house and it worked fine, then i let it sit for a while and put more gas in it. after that, it wouldnt start. i figured that i had too much oil in the mixture and got a ride home from my dad. later that night i added more gas and cleaned the plug then it worked fine. then i went to school on it the next day. then after school i couldnt start it so i had to pedal it home. ater that night i noticed it was touchy to start it up. i had to pull the brakes slightly pull the decompression lever and also switch the light on and off for it to start. now it wont start. what could be the issue? wiring or a coil problem? magneto maybe? condenser? the points are clean.