Ignition Cable: Testing and Inspection

SPARK PLUG WIRE INSPECTION

Spark plug wire integrity is vital for proper engine operation. A thorough inspection is necessary to accurately identify conditions that may affect engine operation. Inspect for the following conditions:
1. Correct routing of the spark plug wires.Incorrect routing may cause cross-firing.
2. Any signs of cracks or splits in the wires.
3. Inspect each boot for the following conditions:
- Tearing
- Piercing
- Arcing
- Corroded terminal

If corrosion, or arcing are indicated on a spark plug wire boot a terminal, replace the wire and inspect the components connected to the wire.