FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Spark Plug Wires

INSPECTION OF SPARK PLUG CABLES

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.

Resistance: Approx 7k - 10k ohms per foot, not to exceed 30k ohms per wire.

Replace the wire if it fails the above test.