11 65 164 Removing and installing/replacing both blow-off valves (N54)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove intake filter housing . See 13 71 000 REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING (N54) .

IMPORTANT: Only when replacing the blow-off valves! There is one less blow-off valve for the charge air duct. Therefore, the charge air duct, too, must be renewed with two connections for the blow-off valves. Conversion of the charge air duct is described at the end of the instructions.

Carefully detach vacuum hoses (1) and lay to one side.

Fig 1: Identifying Vacuum Hoses

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Release locks (1 and 4) by turning through approx. 45° in direction of arrow.

Remove both blow-off valves (2 and 3) towards top.

Fig 2: Identifying Locks And Blow-Off Valves

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Insert blow-off valve (1) in charge-air duct connection.

Installation:

Blow-off valve (1) must snap audibly into place!

Turn lock (2) in direction of arrow until markings (3) line up.

Fig 3: Identifying Blow-Off Valve And Lock

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Only when replacing the blow-off valve!

If the Y-pipe (3) is renewed with two blow-off valves (2), the charge air duct (1) must also be renewed with two connections for the blow-off valves. The vacuum hoses must be adapted.

Fig 4: Identifying Y-Pipe

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Install the charge air duct (1) with a connection for the blow-off valve.

Install the blow-off pipe (2) with a blow-off valve. A vacuum line with a T-piece is no longer needed. Instead, install a new vacuum line (3) between the blow-off valve and the electric changeover valve or intake plenum.

Fig 5: Installing Blow Off Pipe

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Assemble engine.