Basic System Check
- Connect a scope with clamp-on pick-ups to coil high voltage wire, according to manufacturer's specifications. If a scope is not available, remove coil wire from distributor and insert a modified spark plug into coil wire. See Fig. 4.
NOTE: To modify spark plug, cut off side electrode and solder a ground lead to spark plug case. Ground wire and insert plug terminal into coil wire.
- Turn ignition switch to "RUN" position and tap distributor base with a screwdriver handle. Check for sparks while tapping (visible by checking scope trace or at modified spark plug gap).
- If no spark, turn ignition switch "OFF". Crank engine to approximately align engine timing pointer with initial timing degree line on damper. Turn key to "RUN" position and repeat tapping of distributor, checking again for sparks.