Nissan Maxima 1993-1998 Repair Guide

Fuel Rail

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REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4


CAUTION
Observe all applicable safety precautions when working around fuel. Whenever servicing the fuel system, always work in a well ventilated area. Do not allow fuel spray or vapors to come in contact with a spark or open flame. Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container specifically designed for fuel storage; also, always properly seal fuel containers to avoid the possibility of fire or explosion.

  1. Disconnect the negative battery cable, for safety purposes.
  2.  
  3. Remove the intake manifold collector.
  4.  



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Fig. Fig. 1: The upper intake manifold collector must be removed to access the fuel injectors

  1. Disconnect the vacuum hose from the fuel pressure regulator.
  2.  



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Fig. Fig. 2: After the intake manifold collector is removed, the fuel rail and the injectors can easily be accessed.

  1. Remove the fuel hoses connecting to the fuel rails, including the crossover pipe.
  2.  



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Fig. Fig. 3: Removing the fuel rail crossover pipe will make fuel rail removal easier

  1. Unplug the fuel injector electrical connectors.
  2.  
  3. Remove the fuel rail-to-cylinder head bolts.
  4.  
  5. Remove the fuel rail assemblies from the engine.
  6.  



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Fig. Fig. 4: Be sure to use new gaskets when installing the fuel rail assembly

To install:
  1. Clean the manifold gasket area surfaces.
  2.  
  3. Install the fuel injector assembly by performing the following procedures:
    1. Place new injector gaskets onto the manifold.
    2.  
    3. Install the fuel rail assembly to the engine.
    4.  
    5. Install the fuel rail-to-cylinder head bolts and torque the bolts to 6.9-8.0 ft. lbs. (9.3-10.8 Nm). Then tighten them again to 15-20 ft.lbs. (21-26 Nm).
    6.  
    7. Connect the fuel rail assembly to the fuel lines.
    8.  
    9. Connect the vacuum hose to the fuel pressure regulator.
    10.  
    11. Connect the electrical connectors to the fuel injectors.
    12.  

  4.  
  5. Install the intake manifold collector.
  6.  
  7. Connect the negative battery cable.
  8.  
  9. Start the engine and check for leaks.
  10.  

Keep in mind that the engine may take longer to start, since the fuel system has to pressurize. Be sure the battery is in good condition.

 
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