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    1998 Honda Civic GX 1.6L CNG SOHC 4cyl

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    Toyota Previa 1991-1997 Repair Information

    Fuel Pressure Regulator

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    REMOVAL & INSTALLATION



    See Figures 1 through 11

    1. Remove the RH engine service hole cover.
    2.  
    3. Relieve the fuel pressure.
    4.  
    5. Disconnect the vacuum hose from the clamp and pull the end of the hose from the port on the valve.
    6.  



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    Fig. Fig. 1: The fuel pressure regulator is located under the passengers seat engine service hole cover



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    Fig. Fig. 2: Unclamp the vacuum hose from the retaining clip



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    Fig. Fig. 3: Pull the hose off the port of the fuel pressure regulator

    1. Place a suitable container or shop towel under the pressure regulator. Disconnect the fuel return line.
    2.  



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    Fig. Fig. 4: Pull back the clamp from the fuel return line

    1. Plug the hose with a bolt to keep from excessive fluid loss.
    2.  



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    Fig. Fig. 5: A bolt will do the job to plug the hose

    1. Remove the two bolts and extract the regulator from the engine. These bolts have screw heads also.
    2.  

    The rear bolt is hard to get to. An off-set screwdriver can be used to access it.



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    Fig. Fig. 6: Remove the two bolts on either side of the regulator



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    Fig. Fig. 7: An off-set screwdriver will help you to access the bolt in the back of the pressure regulator

    Place a small piece of cloth or paper in the regulator opening, to keep dirt from entering.

    1. Inspect and replace the O-ring if necessary.
    2.  



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    Fig. Fig. 8: Remove the fuel pressure regulator



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    Fig. Fig. 9: Place a small piece of cloth or paper in the regulator mating port to prevent dirt from entering

    To install:
    1. Apply a light coat of gasoline to the O-ring and install it on the regulator.
    2.  



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    Fig. Fig. 10: Apply a light coat of gasoline on the O-ring prior to installation



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    Fig. Fig. 11: Be sure to install the fuel pressure regulator correctly

    1. Attach the pressure regulator to the engine and secure to 48 inch lbs. (5 Nm).
    2.  
    3. Connect the fuel return hose.
    4.  
    5. Attach the vacuum hose and tighten the clamp.
    6.  
    7. Install the RH engine service hole cover.
    8.  

     
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