Vehicles with six-cylinder engines

Switch off the ignition.

Remove the screws and take aside the expansion tank, without disconnecting from it hoses.

Remove the screws and remove the engine cover.

Remove the tips of high-voltage wires from spark plugs (fig. 2.9).

Clean spark a brush or with compressed air to prevent dirt from entering the engine cylinders after removing spark plugs. Remove the spark plug wrench 3122 B.

Screw in new spark plugs and tighten them to a torque of 30 Nm.

Connect the spark plugs high-voltage wires.

Reinstall and screw the expansion tank.