I have an older john deer riding lawn mower I'm guessing about a 1980's model. Was having trouble with it keep running, ran about 5 minutes and then quit, had to wait an hour or more then it would start up and go another 5 minutes and quit again. Checked for spark when it quit and no spark, had spark when cold though. Thought probably bad coil, get hot and quits and works again after cooling off. Got a new coil, has spark but won't start now, cranks over good but won't even fire, frustrated and want to cry LOL. Any ideas ? Thanks.

I think I forgot to say its an 11 HP Briggs & Stratton if that helps