11 00 039 Checking compression in all cylinders (N43/N53/N54)

Special tools required:

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

Necessary preliminary tasks

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 Tools

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

Fig 2: Preparing Special Tools

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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: Screwing Special Tool 11 0 222 Into Special Tool 11 8 731

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

Use adapter (1) if the compression pressure is being checked with the BMW diagnosis system.

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

NOMINAL VALUES , compression pressure

Fig 4: Identifying Adapter
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Assemble engine

Delete fault memory.