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 Testing:

1. Shut off engine.
2. Disconnect #1 ignition wire at the spark plug.
3. Install a spark tester into the end of the spark plug boot.
4. Have an assistant crank the engine over and check for spark at the tester.
5. Repeat this process at each spark plug.
- If any faults are found, see Diagnosis by Symptom article.

6. If no faults are found in the above tests, proceed to computerized engine controls for further diagnosis.