11 00 039 Checking compression of all cylinders (B48B)

Special tools required: 

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

Necessary preliminary tasks: 

• Read out the fault memory
• Rectify faults
• Delete fault memory
• Remove SPARK PLUGS

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

Attention! 

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

Courtesy of BMW OF NORTH AMERICA, INC.

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  .

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect the plug connection A46*6B.

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Courtesy of BMW OF NORTH AMERICA, INC.

Illustration: N74.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Follow diagnosis instruction.

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: 

• Install SPARK PLUGS
• Delete fault memory