Operation CHARM: Car repair manuals for everyone.

Knock Sensor: Service and Repair

Knock detector

To remove

Tools: Long extension
13 mm socket
Ratchet handle
Torque wrench




1. Unplug the knock detector connector.




2. Remove the centre-bolt from the knock detector and lift the detector off the block.


To fit




1. Clean and lubricate the centre-bolt and the threaded hole in the block.

2. Fit the knock detector to the block.




Note: Fit the knock detector with the electrical detector to the front but offset at angle of 20 degrees.

Tightening torque: 14 Nm (10.4 lbf ft)

3. Push on the connector.