11 61 730 BMW leakage test for intake system (N63 O1)

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Special tools required:

2 358 459 .
0 426 464 .
2 201 924
2 353 954 .

IMPORTANT: Excess pressure and vacuum lines can be recognized by the size of their fasteners and are color-coded blue and red respectively.
Identification:

Pressure line blue
Vacuum line red

Excess pressure and vacuum lines must not be mixed up.
Mixing up the lines will result in engine damage.

Necessary preliminary work:

Remove INTAKE SILENCER HOUSING .
Prepare BMW diagnosis system
Start diagnosis program
1. Power train
2. Engine electronics
3. Air supply
4. Charging pressure control system or perception of lack of power

Ordering information:

applicable BMW Workshop Equipment - Start BMW
applicable BMW Workshop Equipment catalogue
Measuring and test equipment
Service and diagnosis
Order number 81 29 0 426 464
Order number 81 31 2 353 954

Check intake system for leaks:

For a precise leakage test, both clean air pipes must be closed with the special tool 2 358 459 .

Fasten clamp with 4 Nm.

Connect the pressure hose (1) with special tool 2 358 459 .

Fig 1: Connecting Pressure Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Insert the blue over overpressure lines into the pneumatic coupling (1) up to the limit position.

Fig 2: Inserting Blue Over Overpressure Lines Into Pneumatic Coupling

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Insert the blue overpressure lines on the diagnosis auxiliary device 0 426 464 on the connector (1).

Connect the IMIB (3) with the connector (2) of the diagnosis auxiliary device by means of the hose 2 201 924.

Fig 3: Identifying Overpressure Lines, Diagnosis Auxiliary Device, Connector, and IMIB

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Follow diagnosis instruction.

Leak detection with BMW smoke tester:

Disconnect the overpressure line (2) on the diagnosis auxiliary device.

Connect pressure line (1) from the BMW smoke tester 2 353 954 with the overpressure line (2).

Fig 4: Identifying Pressure Line And Overpressure Line

Courtesy of BMW OF NORTH AMERICA, INC.

Put the BMW smoke tester 2 353 954 into operation according to the operating instructions.

Fig 5: Identifying BMW Smoke Tester (2 353 954)

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Observe BMW diagnosis instructions.

Leaks on the air intake duct are detected by escaping smoke.