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 Test

SPARK TEST
1. Disconnect the high-tension lead from a spark plug.

Spark Test:




2. Hold the lead and spark plug with insulated pliers 6-10 mm (0.20-0.39 in.) from a ground.
3. Crank the engine and verify that a strong blue spark is visible.
4. If no spark, refer to Ignition System/Testing and Inspection/Procedures/Troubleshooting.