Sentra 1997

Fuel Rail (Supply Manifold) & Injectors

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Removal & Installation



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

    Negative battery cable
     
    Intake manifold collector
     
    Vacuum hose from the pressure regulator
     
    Fuel hoses from the rail
     
    Injector electrical connectors
     
    Fuel rail bolts
     
    Injector rail assembly with injectors from the intake manifold
     
    Injector from the rail by pushing on the injector tail piece
     
    Discard injector O-rings
     

  6.  

To install:

  1. Clean the injector tail piece and lubricate new O-rings with a smear of clean engine oil.
  2.  
  3. Install or connect the following:

    New O-rings
     
    Injector to the fuel rail
     
    Fuel rail and the injectors as an assembly to the intake manifold
     

  4.  
  5. Install the fuel rail bolts and tighten in 2 steps as follows:
    1. Step 1: Bolts to 84-96 inch lbs. (9-10 Nm).
    2.  
    3. Step 2: Bolts to 15-20 ft. lbs. (21-26 Nm).
    4.  

  6.  
  7. Install or connect the following:

    Injector electrical connectors
     
    Vacuum hose to the pressure regulator
     
    Fuel hoses to the rail
     
    All remaining components in the reverse order of removal
     

  8.  

 
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