13 53 158 Removing and installing/replacing high-pressure rail (N18)

WARNING: This page is about a different car, the 2016 MINI Cooper Paceman, 2015 MINI Cooper Paceman, 2014 MINI Cooper Paceman, and 2013 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short-circuiting on removal)
Carry out installation work on fuel system only with coolant temperature below 40 °C.

IMPORTANT: Wear full face guard and protective gloves.
Fuel can emerge spontaneously at high speed when the high pressure line is released!

IMPORTANT: Adhere to conditions of absolute cleanliness when working on the high-pressure fuel system.
Introduced dirt contamination can cause malfunctions in the system!

Do not allow any dirt particles or foreign bodies to get into the system.
Remove all traces of dirt before removing lines or separate components.
Use only fluff-free cloths.
Seal all fuel system openings with protective caps or plugs.

Necessary preliminary tasks:

Remove INTAKE PLENUM .
Remove PRESSURE LINE .

Recycling:

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel.

Observe country-specific waste disposal regulations.

NOTE: For purposes of clarity, illustration shows and description refers to the removed high-pressure rail.

Disconnect plug connections (1) of fuel injectors (2).

Fig 1: Disconnecting Plug Connections From Fuel Injectors

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1) for high-pressure sensor.

Detach wiring harness (2) from high-pressure rail (3).

Release screws.

Tightening torque 13 53 3AZ .

Detach high-pressure rail (3) from cylinder head and remove.

Fig 2: Identifying High Pressure Sensor Plug Connection, Wiring Harness And High Pressure Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Refer to the procedure for installing FUEL INJECTOR if a fuel injector (2) detached from the cylinder head (4) while removing the high-pressure rail.
Replace hold-down device (1).
Replace seal ring (6) and support ring (5), making sure support ring (5) is seated correctly
Make sure guide pin (3) of fuel injector (2) is correctly positioned in designated hole in cylinder head (4).

Fig 3: Identifying Retainer, Guide Pin, Fuel Injector, Seal Ring, Support Ring, And Hole In Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for TIGHTNESS .

Check function of DME.