11 00 039 Checking compression of all cylinders (N55 Hybrid)

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

WARNING:

High-voltage hazard!

The following must be strictly observed prior to starting work :

Observe SAFETY INFORMATION for handling hybrid cars.

IMPORTANT: High tension - mortal danger.
Interrupt power supply to ignition coils.
Read and comply with all information on compression pressure check.

Necessary preliminary work:

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)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Identifying Special Tools (11 0 222), (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: Tightening Oil Screw Using Special Tool

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: Identifying Special Tools (11 0 222) And (11 0 224)
Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine

Clear diagnostic fault entries from fault memory.