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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Component Tests and General Diagnostics

SPARK TEST
1. Disable the fuel pump by disconnecting the inertia fuel cutoff connector.
2. Remove the spark plug.
3. Connect the spark plug to the high-tension lead.
4. Hold the lead and spark plug with insulated pliers 5-10 mm (0.20-0.39 in) from a ground.

Checking for Spark:





5. Crank the engine and verify that a strong blue spark is visible.
6. If there is no spark, refer to Diagnosis by Symptom / No start or misfire. 5 Cranks Normally But Will Not Start