Operation CHARM: Car repair manuals for everyone.

Ignition Cable: Testing and Inspection

CAUTION: Carefully remove the ignition wires by pulling on the rubber boots. Do not bend the wire or the conductor may be broken.

Spark Plug Wire Inspection:





1. Check the condition of the wire terminals. If any terminal is corroded, clean it and if it is broken or distorted, replace the wire.

Spark Plug Wire Resistance Inspection:






2. Connect ohmmeter probes and measure resistance.

Resistance: 25K Ohms max. at 20°C (68°F).

3. If resistance exceeds 25,000 Ohms, replace the ignition wire.