13 53 240 Replacing complete injection pipe (M54)

WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. 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.

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.

Fig 1: Detaching Fuel Injectors Terminal Strip From Injection Pipe

Courtesy of BMW OF NORTH AMERICA, INC.

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.

E53 and E46 only:

Remove heater bulkhead.

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).

Follow instructions for unlocking fuel line.

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

Fig 2: Releasing Fuel Line From Holder & Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

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

Fig 3: Removing Injection Pipe With Fuel Injectors

Courtesy of BMW OF NORTH AMERICA, INC.