I ran my yz two days ago and it started and ran great. Today I went to start it and it started after like twenty kicks but died before I could shut off the choke. After that I could not get it started. Tried to pull it with my griz and it would act like it wasn't able to fire enough to start and run by itself. Checked the spark plug and it was fowled (of course), cleaned it up and checked for spark. Had spark but it seemed weak. Checked the spark plug on another bike and it was alot better. Is it possible that the coil is the only problem or could the cdi be bad.