it sometimes will start and wen it does it will cut in and out at any throttle position i have no tors and it has weak spark
I wouldnt, it can send your piston to the head if you arent careful. But alot of ppl do it...
maybe some thing is up with your stator, cause i worked on a blaster that had a broken flywheel key and it still had great spark. but i would get a flywheel puller and pull the flywheel and see if she is broken..