Nissan 240SX/Altima 1993-1998 Repair Guide

Fuel Pressure Regulator

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REMOVAL & INSTALLATION



See Figures 1, 2 and 3



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Fig. Fig. 1: On the Altima, the fuel pressure regulator is attached to the passenger's side end of the fuel rail by two bolts



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Fig. Fig. 2: Fuel pressure is controlled by a vacuum line connected to the fuel pressure regulator



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Fig. Fig. 3: Always use a new O-ring when installing the fuel pressure regulator

  1. Properly relieve the fuel system pressure.
  2.  
  3. Disconnect and cap the fuel return line at the regulator.
  4.  
  5. Disconnect the vacuum line from the regulator.
  6.  
  7. Remove the bolts securing the pressure regulator to the fuel rail.
  8.  

Place a rag under the fuel rail to absorb any remaining fuel.

  1. Remove the regulator from the fuel rail and discard the O-ring.
  2.  

To install:
  1. Install a new O-ring on the regulator and position it on the fuel rail.
  2.  
  3. Tighten the regulator securing bolts to 26-34 inch lbs. (3-4 Nm).
  4.  
  5. Connect the vacuum line to the regulator.
  6.  
  7. Connect the fuel return line to the regulator.
  8.  
  9. Pressurize the fuel system and check for leaks.
  10.  

 
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