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

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Spark Plug: Testing and Inspection

CHECK SPARK PLUG RESISTANCE

G290076t11 : CHECK SPARK PLUG RESISTANCE
1. Remove the suspect spark plug(s).
2. Measure the resistance between the spark plug center electrode tip and the spark plug HT contact.

- Is the resistance between 8,000 and 12,000 ohms? (nominal 10,000 ohms)

-> Yes
Check ignition coil and circuits. See possible sources list for misfire.

-> No
INSTALL a new spark plug. CLEAR the DTC. TEST the system for normal operation.