11 61 730 BMW leakage test for intake system (N63)
Special tools required:
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 tasks:
- Remove intake filter housing
- Prepare BMW diagnosis system
- Start diagnosis program
- Power train
- Engine electronics
- Air supply
- Charging pressure control system or perception of lack of power
Ordering information:
- 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 .
For F15 and F16 special tool 2 359 613 is required.
Insert the blue over overpressure lines into the pneumatic coupling (1) up to the limit position.
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 81 31 2 357 800 (81 38 2 201 924).
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).
Put the BMW smoke tester 2 353 954 into operation according to the operating instructions.
Observe BMW diagnosis instructions.
Leaks on the air intake duct are detected by escaping smoke.