11 12 729 Checking cylinder head for leaks - cylinder head removed (S54)

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 1 402
11 1 404
11 1 431
11 1 433

For identification of special tools, refer to ENGINE- SPECIAL TOOLS .

Seal off coolant openings with following special tools.

Special tool 11 1 431
Special tool 11 1 433
Special tool 11 1 402
Special tool 11 1 404

Fig 1: Sealing Off Coolant Openings
Courtesy of BMW OF NORTH AMERICA, INC.

Connect compressed air supply to special tool 11 1 404.

Fig 2: Checking Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Immerse cylinder head in a water bath.

Test pressure: 4.5 bar.

Check cylinder head for escaping air (cracks).

NOTE: If necessary, soften the bath water with a cleaning agent.