11 61 050 Removing and installing intake air manifold (M54)

WARNING: This page is about a different car, the 2002 BMW Z3 and 2001 BMW Z3. However, it is still accessible from the selected car via links, so may be relevant.

Instructions for disconnecting and connecting battery. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect negative battery lead.

Remove engine cover.

CAUTION: Do not mix up oxygen monitor sensors for cylinders 1 to 3 and 4 to 6 at plug connection to wiring harness. Mark plug connections.

Unclip plug connections (1) from holders.

Fig 1: Unclipping Plug Connections From Holders

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Detach battery positive lead from intake air manifold.

Detach retainer (2) from battery positive lead.

Press lock and detach vent hose from cylinder head cover.

Pull off retainer (1).

Fig 2: Disconnecting Plug Connection For Intake Air Temperature Sensor

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Disconnect plug connection (2) for intake air temperature sensor.

Detach terminal strip (3) from fuel injectors and place to one side.

Disconnect plug connection (1) on tank venting valve.

Fig 3: Disconnecting Tank Venting Valve Plug Connection

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Remove tank venting valve from retainer (2) on manifold.

NOTE:

For a better overview, this work step is shown on an engine that has been removed.

CAUTION: Catch and dispose of fuel as it escapes.

Instructions for removing and installing fuel hoses, refer to INJECTION NOZZLE AND L... .

Unclip fuel line (1) from holder (2).

Fig 4: Unclipping Fuel Line From Holder

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Unlock fuel line (1).

Loosen guide tube for dipstick.

Press lock and detach return line from guide tube for oil dipstick.

Remove throttle assembly. Refer to THROTTLE AND OPERATION .

Disconnect plug connections and lay cable duct to one side.

Unclip plug connection (1) for knock sensors from holder.

Fig 5: Unclipping Knock Sensor Plug Connection

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Release nut (2) on manifold support.

Release nuts on manifold.

Fig 6: Locating Nuts On Manifold

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NOTE: Engines with air injection: Detach vacuum line on reverse side of intake air manifold.

Remove intake air manifold. Refer to 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (M54) .

Installation:

Check gaskets on all cylinders and replace if necessary.

Fig 7: Checking Gaskets On Cylinders

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Installation:

Check rubber dampers and if necessary replace together with manifold support.

Fig 8: Checking Rubber Dampers

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