13 53 240 Replacing complete injection pipe (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.

Necessary Preliminary Tasks:

Switch off ignition.
Remove cover for fuel injectors.

CAUTION: Mark plug connections (1) of oxygen monitor sensors for cylinder banks 1-3 and 4-6 to prevent them from being mixed up when they are installed later.

Unclip plug connections (1) from holders and disconnect.

Fig 1: Removing Plug Connections From Holders

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When replacing injection pipe:

Remove both holders for plug connections (1) from injection pipe.

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

Disconnect plug connection (3) on solenoid valve of VANOS adjustment unit.

Detach terminal strip (4) for fuel injectors from injection pipe.

Recycling.

Fuel in fuel lines is under pressure (approx. 3-5 bar). Fuel escapes when fuel lines are detached. Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

Z3 Only:

Remove cable strip for battery positive lead and engine wiring harness from bulkhead.

Z3, E85, E39, E46 And E53:

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

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

Fig 2: View Of Fuel Line And Holder

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Follow instructions for unlocking fuel line. Refer to 13 53 540 REPLACING, SEALING FUEL HOSES .

Unlock fuel line (1) from cylinder head at rear.

Release screws (1) and remove injection pipe with fuel injectors.

Fig 3: Locating Injection Pipe Retaining Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Coat sealing rings of fuel injectors with anti-seize agent to facilitate fitting of injection pipe.