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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Knock Sensor: Service and Repair




1. Remove the oil filter element.
2. Use the SST to remove and install the knock sensor.

Tightening torque: 19.6-34.3 Nm (15-25 ft.lbs.)

3. Install the oil filter element.