Check compression of all cylinders

Preliminary work 

• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING THE COVER OF THE RIGHT DME CONTROL UNIT .
• Refer to REMOVING THE CONTROL UNIT BRACKET FOR CYLINDERS 1 TO 4 .
• Refer to REMOVING THE COVER PANEL OF THE LEFT DME CONTROL UNIT .
• Refer to REMOVING TOP CLEAN AIR PIPE .
• Refer to REMOVING THE CONTROL UNIT BRACKET FOR CYLINDERS 5 TO 8 .
• Refer to REMOVING COOLANT EXPANSION TANK .
• Refer to REMOVING ALL IGNITION COILS .
• Refer to REMOVING THE SPARK PLUG OF CYLINDER BANK 1 .
• Refer to REMOVING SPARK PLUG OF CYLINDER BANK 2 .

• Unscrew sensor (1) from special tool 0 490 615 (11 0 222). 
• Check the secure fit of the valve below.

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• Prepare special tool 0 490 615 (11 0 222)  in conjunction with the special tool 0 496 306 (11 8 732)  and 0 496 107 (11 8 730)  .

Courtesy of BMW OF NORTH AMERICA, INC.

Courtesy of BMW OF NORTH AMERICA, INC.

• Screw special tool 0 490 615 (11 0 222)  with 10 Nm on the special tool 0 496 107 (11 8 730)  .

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• Screw special tool 0 490 615 (11 0 222)  by hand into the spark plug thread (1).

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• Connect special tool 2 410 242 to special tool 0 490 613 (11 0 220) with the bayonet closure  .
• Screw in the 100-bar sensor (1) on the special tool 2 410 242 by hand. 

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• Connect the 100 bar sensor with the Integrated Measurement Interface Box (2).
• Connect network cable 1 with the Integrated Measurement Interface (2).

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• Connect diagnostic system.
• Execute "Check compression of all cylinders" service function:
  • engine
  • Digital Motor Electronics
• Remove special tool 0 490 615 (11 0 222)  .

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Follow-up work 

• Refer to INSTALLING SPARK PLUG OF CYLINDER BANK 2 .
• Refer to INSTALLING THE SPARK PLUG OF CYLINDER BANK 1 .
• Refer to INSTALLING ALL IGNITION COILS .
• Refer to INSTALLING COOLANT EXPANSION TANK .
• Refer to INSTALLING THE CONTROL UNIT BRACKET FOR CYLINDERS 5 TO 8 .
• Refer to INSTALLING CLEAN AIR PIPE, TOP .
• Refer to INSTALLING THE COVER OF THE LEFT DME CONTROL UNIT .
• Refer to INSTALLING CONTROL UNIT HOLDER FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE COVER OF THE RIGHT DME CONTROL UNIT .
• Refer to CONNECTING ALL BATTERY GROUND LEADS .
• Refer to DELETE FAULT MEMORY .