| Fig. 1: Checking individual plug wire resistance with
a digital ohmmeter
|
At every tune-up/inspection, visually check the spark plug cables for burns cuts, or breaks in the insulation. Check the boots and the nipples on the distributor cap and/or coil. Replace any damaged wiring.
Every 60,000 miles (96,000 Km) or 60 months, the resistance of the wires should be checked with an ohmmeter. Wires with excessive resistance will cause misfiring, and may make the engine difficult to start in damp weather.
To check resistance, use an ohmmeter and attach the leads to each end of the plug wires connector and read the resistance. The reading should not exceed 16 kohms per 3.28 ft. (1 m). Replace any wires that do not meet the specification.
