AC3 - Check For Spark At Plugs

- Disconnect the spark plug wire to any accessible cylinder.

- Connect spark tester between spark plug wire and engine ground.

- Crank engine and check for spark.

- Reconnect the spark plug wire to the spark plug.

- Was spark present and consistent?

Yes -- Go to AC4. AC4 - Check Continuity of Ignition Ground Circuit

No -- Refer to Ignition Systems / Testing and Inspection for Electronic Ignition (EI) diagnosis.