Mercedes-Benz Cars 2000-05

Fuel Injectors

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Disconnect the negative battery cable and properly relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Resonance intake pipe
     
    Fuel lines
     
    Injection pipes at nozzles
     
    Injection nozzles
     

  6.  

To install:

  1. Install or connect the following:

    Injectors with new O-rings. Torque to 30 ft. lbs. (40 Nm).
     
    Injection pipes at nozzles. Torque to 17 ft. lbs. (23 Nm).
     
    Fuel lines
     
    Resonance intake pipe
     
    Negative battery cable
     

  2.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Brake servo vacuum hose
     
    Pressure regulator vacuum hose
     
    Positive Crankcase Ventilation (PCV) hose
     
    Fuel feed pipe
     
    Fuel system electrical connections
     
    Left side ignition coil covers if necessary
     
    Fuel rail with the injectors attached
     
    Injector-to-fuel rail locking clip
     
    Injectors
     

  6.  

To install:

  1. Install or connect the following:

    Injectors with new O-rings on the fuel rail
     
    Injector-to-fuel rail locking clip
     
    Fuel rail/injector assembly
     
    Left side ignition coil covers
     
    Fuel system electrical connections
     
    Fuel feed pipe
     
    PCV hose
     
    Pressure regulator vacuum hose
     
    Brake servo vacuum hose
     
    Negative battery cable
     

  2.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Brake servo vacuum hose
     
    Pressure regulator vacuum hose
     
    PCV hose
     
    Fuel feed pipe
     
    Fuel system electrical connections
     
    Left side ignition coil covers if necessary
     
    Fuel rail with the injectors attached
     
    Injector-to-fuel rail locking clip
     
    Injectors
     

  6.  

To install:

  1. Install or connect the following:

    Injectors with new O-rings on the fuel rail
     
    Injector-to-fuel rail locking clip
     
    Fuel rail/injector assembly
     
    Left side ignition coil covers
     
    Fuel system electrical connections
     
    Fuel feed pipe
     
    PCV hose
     
    Pressure regulator vacuum hose
     
    Brake servo vacuum hose
     
    Negative battery cable
     

  2.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Brake servo vacuum hose
     
    Pressure regulator vacuum hose
     
    PCV hose
     
    Fuel feed pipe
     
    Fuel system electrical connections
     
    Left side ignition coil covers if necessary
     
    Fuel rail with the injectors attached
     
    Injector-to-fuel rail locking clip
     
    Injectors
     

  6.  

To install:

  1. Install or connect the following:

    Injectors with new O-rings on the fuel rail
     
    Injector-to-fuel rail locking clip
     
    Fuel rail/injector assembly
     
    Left side ignition coil covers
     
    Fuel system electrical connections
     
    Fuel feed pipe
     
    PCV hose
     
    Pressure regulator vacuum hose
     
    Brake servo vacuum hose
     
    Negative battery cable
     

  2.  

 
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