Spark Plug: Testing and Inspection
INSPECTIONTesting For Spark:
1. Remove the spark plug.
2. Connect the spark plug to the spark plug wire.
3. Hold the spark plug with insulated pliers 5 - 10 mm (0.20 - 0.40 in) from ground.
4. Crank the engine and verify that there is a strong blue spark. If there Is no spark, replace the spark plug.
Spark Plug:
5. Check the following points. If a problem is found, replace the spark plug.
^ Damaged insulation
^ Worn electrodes
^ Carbon deposits. (If cleaning is necessary, use a plug cleaner or a wire brush. Clean the upper insulator also.)
^ Damaged gasket.
^ Burnt condition.