Ignition Cable: Testing and Inspection

SPARK PLUG CABLE TEST
1. Disconnect, one at a time, each of the spark plug cables while the engine is idling to check whether the engine's running performance changes or not.

Caution: Wear rubber gloves while doing so.

2. If the engine performance does not change, check the resistance of the spark plug cable, and check the spark plug itself.




RESISTIVE CODE INSPECTION
Measure the resistance of the all spark plug leads.
1. Check cap and coating for cracks.
2. Measure resistance

Limit: Max. 22 K Ohms





Improper arrangement of spark plug cables will induce Voltage between the cables, causing misfiring and developing a surge at acceleration in high-speed operation. Therefore, be careful to arrange the spark plug cables properly by the following procedure.
1. Install the spark plug cable clamps as shown in the illustration
2. The numerals on the support and clamp indicate the spark plug cable No.
3. Pay attention to the following items when the spark plug cables are installed.
(1) Install the cables securely to avoid possible contact with metal parts.
(2) Install the cables neatly, ensuring they are not too tight, loose, twisted or kinked.