Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Spark Plug Wires Not Operating Properly

1. Inspect the routing of the wires. Improper routing can cause crossfiring.
2. Inspect each wire for any signs of cracks or splits in the wire.
3. Inspect each boot for the following conditions:
- Tearing
- Piercing
- Arc through
- Carbon Tracking

If the boot needs to be replaced, replace the complete spark plug wire.