11 00 039 Checking compression of all cylinders (N20, N26)

Special tools required:

11 0 222
11 8 732
11 8 731
0 490 615
0 496 107
13 6 052
11 4 310

IMPORTANT: High tension - mortal danger!
Interrupt power 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.
Prepare special tool 11 0 222 in conjunction with 11 8 732 and 11 8 731 .

Order number: 0 490 615/0 496 107.

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

G04789653

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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), (11 8 732) And (11 8 731)

G05501555

Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: Oil screw thread on special tool 11 8 731 .

Fig 3: Inserting Special Tool (11 0 222) Into Special Tool (11 8 731)

G05528128

Courtesy of BMW OF NORTH AMERICA, INC.

Connect special tool 11 0 222 to 13 6 052 and 11 4 310 .

Tightening torque: 10 Nm.

Fig 4: Connecting Special Tool (11 0 222) To (13 6 052) & (11 4 310)

G09918870

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in pressure sensor 81 38 0 431 592 manually with special tool 11 4 310 .

Fig 5: Identifying Special Tool (11 4 310)

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Courtesy of BMW OF NORTH AMERICA, INC.

Screw prepared special tools (1) into cylinders according to diagnosis information.

Fig 6: Identifying Special Tools

G09918872

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect ignition coils and injector wiring harness from DME control unit (2).

Fig 7: Disconnecting Ignition Coils And Injector Wiring Harness From DME Control Unit

G09918873

Courtesy of BMW OF NORTH AMERICA, INC.

Compression check, electronic.

Connect ISID and IMIB (Integrated Measurement Interface Box) (1).

Follow diagnosis instruction.

Fig 8: Identifying ISID And IMIB Box

G09918874

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fault memory.