My grubee skyhawk 66/80cc spark plug broke a while back. I replaced it with one from a weed wacker and it ran for a few minutes. Than it sat for about a month. I just put a pullstart on it and tested the new device, it works. I was not expecting it to run or even attempt to. Now I'm puzzled, it ran for about four seconds, quit, now won't run, or attempt to. Is the CDI bad? Help would be greatly appreciated!
