Changed ignition coil, spark plug, ignition switch, and checked kill switch. Broke down and cleaned carburator a few months ago. Engine died while running which resulted in changing ignition parts because could not get a reading on ohm meter from end of spark plug cap and/or end of cable thru ignition coil. Now getting spark on plug when engine turns over with electric starter but engine will not start. Put one spoonfull of gasoline in engine where spark plug goes and replaced spark plug. Engine will still not fire. What else could i check?? Thanks for any info you can give me.