Ignition Cable: Testing and Inspection

Ignition Wire Inspection:

1. Visually inspect the ignition wires for the following:
a. Insulation for swelling or breakdown due to fuel, oil, grease or etc.
b. Insulation for cracks or breaks.
c. Insulator boots for swelling or breakdown due to fuel, oil, grease or etc.
d. Insulator boots for cracks or breaks.
e. Terminal ends for corrosion, cracks or looseness.

Ignition Wire Resistance Test:

2. Using an ohmmeter, check the resistance between the terminal ends.

Spark plug Resistance (K Ohms)
cable number

1 5.8
2 8.4
3 10.6
4 9.7


Replace the wire if it fails the above test.