Testing for Spark

SPARK TEST

Install Spark Plug Socket Squarely Over Spark Plugs:

1. Remove the spark plug.
2. Connect the spark plug to a high-tension lead.

Spark Test:

3. Hold the high-tension lead and spark plug with insulated pliers 5-10 mm (0.20-0.39 in) from a ground.
4. Crank the engine and verify that there is a strong blue spark. If not, replace the spark plug or high-tension lead as necessary.