12 12 011 Replacing All Spark Plugs (N73)

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NOTE:

For Special Tool identification, see ENGINE ELECTRICAL SYSTEM - SPECIAL TOOLS .

Special Tools Required:

12 1 171
12 1 200
12 7 131

Necessary Preliminary Tasks:

Switch off ignition.
Remove acoustic cover.
Remove intake air manifold. Refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N73) .
Remove ignition coils.

Tighten down spark plug with special tool 12 1 171 and special tool 12 7 131 (extension), special tool 12 1 200 (torque limiter).

Tightening torque, refer to 12 12 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Installation:

Without special tool 12 1 200, note tightening torque.

Fig 1: Identifying Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.