Ignition System: Service and Repair

Ignition Components Overview

• The engine speed sensor (G28) => [ (Item 14) ] Engine Overviews is located on the cylinder block.






1 Knock Sensor 1 (G61)

• It is necessary to remove the thermostat first, in order to remove the knock sensor 1. Refer to => [ Coolant Thermostat Housing with Thermostat ] Coolant Thermostat Housing with Thermostat.

• The contacts are gold plated.

2 Knock Sensor 2 (G66)

• It is necessary to remove the oil filter bracket first, in order to remove the knock sensor 2. Refer to=> [ Oil Filter Bracket ] Removal and Replacement.

• The contacts are gold plated.

3 Ignition Coil with Power Output Stage (N70, N127, N291, N292)

• Removing and installing, refer to => [ Ignition Coil with Power Output Stage ] Service and Repair.

4 Spark Plug

• 25 Nm

• If the spark plug is replaced, grease the ignition coil with power output stage. Refer to => [ Installing ] Service and Repair.

• Type and electrode gap, refer to => [ Spark Plug Technical Data ] Spark Plug Technical Data.

• Remove and install using the spark plug removal tool (3122 B)

5 Bolt

• 20 Nm

• Tightening specification affects the function of the knock sensor.

6 Bolt

• 10 Nm

7 Camshaft Position Sensor (G40)

• Contacts are gold plated.

8 O-ring