Spark Test

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, proceed to Secondary Component Tests. [1][2]Component Tests and General Diagnostics
- If ALL secondary components show no spark, proceed to Primary Component Tests. [1][2]Component Tests and General Diagnostics
- If all cylinders test O.K., inspect for fouled spark plugs and clean or replace as necessary.