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: Service and Repair

Spark Plug Wire Removal:






1. Remove and install plug wires carefully.

CAUTION: When removing plug wires, pull on the boot, not the wire.

Install Spark Plug Socket Squarely Over Spark Plugs:






2. Remove and install plugs with socket specifically designed for the job. Make sure socket fits squarely over the plug.
3. Set gap to 0.040 - 0.043 in (1.0 - 1.1 mm).
4. Apply anti-seize compound or molybdenum-based lubricant to plug threads. Tighten to 11 - 16 ft lb (15 - 22 Nm).