11 00 039 Checking compression of all cylinders (N55)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

IMPORTANT: High tension - mortal danger!
Interrupt voltage supply to ignition coils.
Read and comply with notes on compression pressure check.

Necessary preliminary tasks:

Remove SPARK PLUGS .

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

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

Fig 1: Identifying Special Tool (11 0 222) And (11 8 732)

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

Fig 2: Identifying Special Tools (11 0 222) In Conjunction With (11 8 732) And (11 8 731)

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

IMPORTANT: Oil thread on special tool 11 8 731 .

Fig 3: Attaching Special Tool 11 0 222 Into Special Tool 11 8 731

Courtesy of BMW OF NORTH AMERICA, INC.

Screw special tool 11 0 222 by hand into spark plug thread and connect special tool 11 0 224 .

Depress accelerator pedal and actuate starter until compression pressure stops rising.

NOMINAL VALUES , compression pressure

Fig 4: Connecting Special Tool 11 0 224
Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Delete fault memory.