11 00 039 Checking compression of all cylinders (230i and 230i xDrive coupe/convertible)

Special tools required: 

• 11 0 222 
• 11 8 732 
• 11 8 731 
• 2 410 242

Necessary preliminary tasks: 

• Reading out the fault memory
• Rectify faults
• Delete fault memory
• Refer to REMOVING SPARK PLUGS .

Unscrew tip (1) from special tool 11 0 222  .

Attention! 

Then check the Schrader valve that is now visible for secure seating.

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Prepare special tool 11 0 222  in conjunction with 11 8 732  and 11 8 731  .

Screw special tool 11 0 222  into special tool 11 8 731  to 10 Nm  .

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Disconnect the plug connection A46*6B.

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Connect special tool 2 410 242 to special tool 11 0 222  with the bayonet fitting.

Screw in the 100-bar sensor (1) on the special tool 2 410 242 hand-tight.

Connect 100-Bar sensor (1) with the Integrated Measurement Interface Box.

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Illustration: N74.

Screw special tool 11 0 222  by hand into the spark plug thread.

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Follow diagnosis instruction.

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Required follow-up work: 

• Refer to INSTALLING SPARK PLUGS .
• Delete fault memory