What was found
AIRCRAFT WAS BEING RUN BEFORE FLIGHT. WHEN SHUTTING RIGHT MAG OFF ON LEFT ENGINE, ENGINE QUIT. CHECKED P-LEADS FOR GROUNDING AND PROPER INSTALLATION. REMOVED MAG AND CHECKED COIL, POINT GAP AND REPLACED CONDENSER. UPON CHECKING E-GAP FOUND POINTS NOT CLOSING. REPLACED POINTS WHICH CORRECTED DISCREPANCY. SUSPECT CAUSE: INSPECTING POINTS WRONG. WHEN OPENING POINTS TO INSPECT, BE CAREFUL NOT TO OPEN TOO FAR.