I was grading my driveway the other day with my late 1989 roper garden tractor and the engine started skipping and would only run with the choke pulled all the way out. the next day it would not start at all. I took the carb apart clean it all including the jets with a small wire . after putting the carb back on I changed the fuel filter, but no go.. She turns over but will not start. I shall take plugs out tomorrow and maybe next test the coil, Is there anywhere else I should be looking . I am stumped . ANY ideas would be greatly appreciated Thanks for your time Gismo