Ignition System: Testing and Inspection

NO SPARK TEST AND INSPECTION

Spark Tester:

1. Disconnect #1 ignition wire at the spark plug.
2. Install a spark tester into the end of the spark plug boot.
3. Have an assistant crank the engine over and check for spark at the tester.
4. Repeat this process at each spark plug.
^ If any cylinder does not show spark, test and inspect secondary components.
^ If all secondary components test O.K., test and inspect primary components.
^ If all cylinders test O.K., inspect for fouled spark plugs and clean or replace as necessary.
5. If no faults are found in the above tests, proceed to Computers and Control Systems for further diagnosis.