As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ENGINE IS EQUIPPED WITH ELECTRONIC IGNITION ON RIGHT SIDE OF ENGINE WITH A START MODE, SO DID NOT REALIZE THE IMPULSE ON LEFT SIDE. SLICK MAG WAS GOING BAD UNTIL THE MAGNETO TOTALLY DID NOT WORK. IMPULSE COUPLING SPRING LOST TENSION UNTIL MAG FAILURE.