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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 53 332 Removing and installing / replacing feed line (N53, N54, N54T)

13 53 332 Removing and installing / replacing feed 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: 

WARNING: 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.

Wear safety goggles.

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 contamination 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. See 11 61 050 REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N54) .

Recycling: 

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

N53 only: 

Lay exhaust gas recirculation (1) upwards to one side. Do not  remove.

Fig 1: Lay Exhaust Gas Recirculation Upward
G05501961Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Unlock and detach fuel line (2).

Catch and dispose of escaping fuel.

Fig 2: Identifying Plug And Fuel Line
G04755094Courtesy of BMW OF NORTH AMERICA, INC.

Seal fuel lines with special tools 13 5 281 and 13 5 282.

Fig 3: Identifying Seal Fuel Lines With Special Tools 13 5 281 And 13 5 282
G04755095Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Release screw (2).

Remove feed line (3).

Fig 4: Slacken Nut And Remove Feed Line
G04755096Courtesy of BMW OF NORTH AMERICA, INC.

Seal feed line with matching plug from special tool kit 32 1 270.

Close off feed line and high pressure pump with a matching plug from set of special tools 32 1 270.

Fig 5: Identifying Special Tool Kit (32 1 270)
G04755097Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:  Feed lines with a soldered bracket must be replaced by the new version with elastomer clamp holder. Observe installation position of fuel low-pressure sensor. Lines for solenoid switches are laid behind fuel line. Install feed line (3). In so doing, tighten screw connection hand-tight only

Fig 6: Identifying Fuel Line Connection
G04755096Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Follow sequence of screw connections: Tighten down nut (1) with special tool 13 5 020. Tightening torque 13 53 6AZ . Tighten screw (2). Replace aluminum screw, continue to use only screws with yellow thread-locking sealant. Tightening torque 13 53 9AZ .

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

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