11 00 039 Checking compression of all cylinders (N57 Diesel)

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Special tools required:

11 0 235 .
11 8 880 .

Necessary preliminary work:

Remove all GLOW ELEMENTS .

WARNING: On vehicles with manual gearbox:
There must be no drive position engaged during the starting operation.

IMPORTANT: To prevent the injection system from injecting, it is necessary to disconnect the injection system plug connections.

Screw in special tools 11 8 880 and 11 0 235 .

NOTE: The compression check on all cylinders must have a constant battery voltage. If necessary, connect an auxiliary battery.

The number of engine revolutions must be the same for each cylinder during the compression check (the measuring result could be distorted).

COMPRESSION PRESSURE .

Fig 1: Identifying Special Tools

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Clear DDE fault memory.

Check function of DDE.