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

WARNING: This page is about a different variant/trim than selected.

Special tools required:

11 0 222
11 8 732
11 8 731
0 490 615
0 496 107
2 410 242

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 .

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

Order number: 0 490 615/0 496 107.

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

Fig 2: Identifying Special Tool (11 0 222, 11 8 732 And 11 8 731)

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

Screw in 100 bar pressure sensor (81 38 0 431 592) hand-tight using special tool 2 410 242.

Fig 4: Screwing Pressure Sensor Using Special Tool (2 410 242)

Screw special tool 11 0 222 by hand into the spark plug thread.

Illustration: N74.

Fig 5: Identifying Special Tool (11 0 220)

Unplug connector A223*6B.

For L6 and L7 vehicles, connector A46*6B

Fig 6: Identifying Connector

Compression check, electronic .

Connect ISID and IMIB (Integrated

Measurement Interface Box) (1) or IMIB R2.

Follow diagnosis instruction.

Fig 7: Connecting ISID And Integrated Measurement Interface Box

Assemble engine.

Check fault memory.