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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 2025 (Fuel System - Repair) >> Injection Nozzle >> 13 53 192 Removing and installing/replacing a pressure line (N53, N54, N54T)

13 53 192 Removing and installing/replacing a pressure line (N53, N54, N54T)

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required: 

See FUEL SYSTEM - SPECIAL TOOLS .

WARNING: Observe warning on cylinder head cover.
Disconnect battery negative terminal  (risk of fire due to short-circuiting on removal). See 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY (CONVERTIBLE) or 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY (COUPE).
Electric fuel pump starts up automatically each time door is opened!
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 velocity when the high-pressure line is released!
IMPORTANT: Adhere to conditions of absolute cleanliness when working on the high-pressure fuel system.
Introduced contaminants 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 pipes or individual components.
  • Use only fluff-free cloths.
  • Seal all fuel system openings with protective caps or plugs.

Necessary preliminary tasks: 

NOTE:
  • Ignition coils must not be fouled by fuel! The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail! It is therefore essential to protect the spark plug slot against ingress of fuel with a cloth!
  • Before installing ignition coils, clean spark plug slots with compressed air.
  • Make sure the spark plug slot is absolutely clean.

Recycling:  Fuel escapes when fuel lines are detached. Catch and dispose of escaping fuel in a suitable container. Observe country-specific waste disposal regulations.

WARNING:

Wear full face guard and protective gloves.

Fuel can emerge spontaneously at high velocity from the fuel injectors!

To reduce the fuel pressure, place rag over fuel injector and carefully tap against the fuel injector with a spanner.

There is a risk of injury if the fuel pressure is not reduced!

NOTE: The following description applies to all pressure lines. First disconnect the pressure lines from the rail. To reduce existing fuel pressure if necessary. Fuel must not get into the spark plug slot. Then disconnect the pressure line from the injector.

Release nuts (1), gripping the injector with a spanner (2) in so doing. Disconnect pressure line (3).

IMPORTANT: If several pressure lines are removed, ensure that each pressure line is reinstalled in its original location (cylinder). Mark pressure lines.
Fig 1: Identifying Nuts, Wrench And Pressure Line
G05501982Courtesy of BMW OF NORTH AMERICA, INC.

Close off injector with protective cap (1). Protective caps are available from BMW Parts Service. Seal high pressure rail with appropriate plug from set of special tools 32 1 270.

Fig 2: Identifying Protective Cap With Special Tool Kit 32 1 270
G05501983Courtesy of BMW OF NORTH AMERICA, INC.

Seal pressure line (1) with a matching plug from set of special tools 32 1 270.

Fig 3: Identifying Pressure Line With Special Tool Kit 32 1 270
G05501984Courtesy of BMW OF NORTH AMERICA, INC.

Installing pressure line:  Installation of pressure line is described separately from removal. Same procedure for all pressure lines. Copper seals that may be fitted (1) are no longer needed and must be removed. If reusing the pressure line, apply a light coating of transmission oil to the thread. New pressure lines are already coated.

Fig 4: Identifying Copper Seals
G05501985Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Connect pressure line (1) without tension only. To ensure distortion-free installation of the pressure line and to avoid damaging the thread, it must be possible for both nuts to be screwed on easily by hand! If the nuts cannot be easily screwed on by hand, the injector must be turned into the installation position!
NOTE: Description of "Turning injector into installation position" in the following two operations.
Fig 5: Connecting Pressure Line
G05501977Courtesy of BMW OF NORTH AMERICA, INC.

Only if injector has to be rotated in fitted position: 

Fig 6: Turning Injector
G05501978Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Do not under any circumstances pull injector out of bore hole! If the injector is pulled out of the bore hole, the PTFE sealing ring must be replaced!

Tighten down screw for hold-down device (1). Tightening torque 13 53 5AZ.

Fig 7: Identifying Holding-Down Element With Screw
G05501980Courtesy of BMW OF NORTH AMERICA, INC.

Adhere to tightening sequence:

When tightening nut (1) on injector, grip hexagon head of injector with wrench (3). Tighten down nuts with special tool 37 1 151. Tightening torque 13 53 8AZ. .

Fig 8: Identifying Nuts And Wrench
G05501981Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine. Check fuel system for tightness. Check function of DME.

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