Help!!! Please!!!

I been having this problem with Swinger lately. I drive it for a while and it acts just fine, but then all of a sudden it wont start on me?! It seems to not get spark and then i found out the coil burns up. i replaced it a couple times and it starts right up with each fresh coil. I read the voltage and it gets about 9 ish volts while running. Is my ballast bad?? What could be the problem??My timing is off just a little bit but not enough to cause this mess...can anyone give me some advice?? Thank you in advance!!
Author: admin