Spark plug wire integrity is vital for proper engine operation. A thorough inspection will be necessary to accurately identify conditions that may affect engine operation. Inspect for the following conditions:

1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
2. Remove the air cleaner layer. Refer to Air Cleaner Replacement .
3. Correct routing of the spark plug wires--Incorrect routing may cause cross-firing.
4. Any signs of cracks or splits in the wires.
5. Inspect each boot for the following conditions:

•

Tearing

•

Piercing

•

Arcing

•	Carbon tracking

•	Corroded terminal

6. If corrosion, carbon tracking or arcing are indicated on a spark plug wire boot or on a terminal, replace the wire and the component connected to the wire.
7. Install the air cleaner layer. Refer to Air Cleaner Replacement .
8. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.