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 spark plug wiring for the following:
^ Correct routing
^ Clean and tight connections
^ Cuts
^ Burns
^ Chafing
^ Damage
2. Reroute or replace the wire(s) as necessary.
3. With the engine running, inspect for any arcing. Replace as necessary.
4. With the engine OFF, measure the resistance of each suspect wire. If the resistance is greater than 25,000 ohms, replace the wire.