FUEL SYSTEM PRECAUTION


  1. PRECAUTIONS


    1. Before inspecting and repairing the fuel system, disconnect the cable from the negative (-) battery terminal.

    2. Do not smoke or work near open flame when handling the fuel system.

    3. Keep gasoline away from rubber or leather parts.

  2. DISCHARGE FUEL SYSTEM PRESSURE

    CAUTION:


    • Perform the following procedure before removing any fuel system parts to prevent fuel from spilling out.

    • Pressure will still remain in the fuel lines even after performing the following procedure. When disconnecting a fuel line, cover it with a piece of cloth to prevent fuel from spraying or coming out.


    1. Remove the rear seat cushion assembly Click here.

    2. A005T9N

      Remove the rear floor service hole cover.

    3. Disconnect the connector from the fuel pump assembly.

    4. Start the engine. After the engine stops naturally, turn the engine switch off.

      Note

      Do not increase engine speed or drive the vehicle while waiting for the engine to stop naturally.

      Tech Tips

      DTC P0171/25 may be set.

    5. Crank the engine again and make sure that the engine does not start.

    6. Remove the fuel tank cap and discharge the pressure from the fuel tank.

    7. Disconnect the cable from the negative (-) battery terminal.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    8. Connect the connector of the fuel pump assembly.

  3. FUEL LINE


    1. When disconnecting a high-pressure fuel line, a large amount of gasoline will spray out. Perform the following procedure:


      1. Discharge fuel system pressure.

      2. Disconnect the fuel tube.

      3. Drain the fuel remaining inside the fuel tube into a container.

      4. A005UAVE15

        Cover the disconnected pipe and connector with a plastic bag to prevent to damage and contamination.

    2. A005TOQE18

      Perform the following procedure when disconnecting a fuel delivery pipe (metallic type):

      Text in Illustration
      *1 O-Ring
      *2 Retainer
      *3 Pipe
      *4 Nylon Tube
      *5 Fuel Tube Connector

      Tech Tips

      The structure of a fuel tube connector is as shown in the illustration.


      1. Check if there is any damage or foreign objects on the pipe connection.

      2. A005T16E05

        Remove the No. 2 fuel pipe clamp.

        Note

        Do not reuse the fuel pipe clamp.

      3. Find the metallic connector of the fuel tube assembly.

      4. A005WJOE01

        Install SST to the connector as shown in the illustration.

        SST
        09268-21010
      5. A005RM7E05

        Turn SST, align the retainers inside the connector with SST chamfers and insert SST into the connector.

      6. Slide SST and the connector together towards the fuel tube assembly.

    3. Perform the following procedure when connecting a fuel tube connector (metallic type):


      1. Check if there is any damage or foreign objects on the pipe connection area.

      2. A005WJ1E01

        Match the axis of the connector with the axis of the pipe, and push the pipe into the connector until the connector makes a "click" sound. If the pipe is difficult to push into the connector, apply a small amount of clean engine oil to the tip of the pipe.

      3. After connecting, check if the pipe and the connector are securely connected by pulling on them.

      4. A005T16E06

        Install a new No. 2 fuel pipe clamp.

      5. Check for fuel leaks.

    4. Perform the following procedure when disconnecting a fuel tube connector (quick type A):


      1. A005WHRE01
        Text in Illustration
        *1 Claw

        Release the claw and remove the No. 1 fuel pipe clamp.

      2. A005U94E20

        Detach the lock claws by raising the fuel hose connector cover as shown in the illustration.

      3. Check that there is no dirt or other foreign objects on the pipe and contact surface before disconnecting them. Clean them if necessary.

      4. Disconnect the connector from the pipe by hand.

      5. A005RLKE13

        If the connector and the pipe are stuck, push in and pull on the connector to release them. Pull the connector out of the pipe carefully.

      6. Check that there is no dirt or other foreign objects on the contact surfaces of the disconnected pipe. Clean them if necessary.

      7. A005V3QE18

        Cover the disconnected pipe and connector with a plastic bag to prevent to damage and contamination.

    5. Perform the following procedure when connecting a fuel tube connector (quick type A):


      1. A005RSME03

        Check if there is any damage or foreign objects on the pipe connection.

      2. Line up the two parts of the pipes to be connected and push them together until the connector makes a "click" sound. If the pipe is difficult to push into the connector, apply a small amount of clean engine oil to the tip of the pipe and reinsert it.

      3. After connecting the pipes, check that the pipe and connector are securely connected by pulling on them.

      4. A005U94E21

        Attach the lock claws to the connector by pushing down on the fuel hose connector cover.

      5. A005WHRE01
        Text in Illustration
        *1 Claw

        Attach the lock claw and install the No. 1 fuel pipe clamp.

      6. Check for fuel leaks.

    6. Perform the following procedure when disconnecting a fuel tube connector (quick type B):


      1. Before disconnecting the connector, clean off any dirt that may be present.

      2. A005UXAE03

        Pull the tabs of the fuel tube retainer to disengage the 2 claws. Push the retainer down as shown in the illustration.

        Tech Tips

        Be sure to disconnect the connector by hand.

      3. A005UMQE08

        If the connector and pipe are stuck, hold the fuel pipe by hand and push and pull on the connector. Pull the two pipes apart to separate the connector.

      4. If there is any dirt or any other foreign objects on the sealing surfaces of the disconnected pipes, clean them if necessary.

      5. A005V5X

        Cover the disconnected pipe and connector with a plastic bag to prevent damage and contamination.

    7. Perform the following procedure when connecting a fuel tube connector (quick type B):


      1. A005SUM

        Align the fuel tube connector with the pipe, push the fuel tube connector on until the pipe comes into contact with the seat, and then push the retainer in until the claws lock.

      2. After connecting the fuel tube connector, check that the fuel tube connector and pipe are securely connected by pulling on them.

      3. Check for fuel leaks.

  4. INJECTOR


    1. A005W7JE03

      Observe the following precautions when removing and installing a fuel injector:


      1. Do not reuse an O-ring or insulator.

      2. When placing a new O-ring onto the injector, do not damage the O-ring.

      3. Coat a new O-ring with grease or gasoline before installing it. Do not use engine oil, gear oil or brake fluid.

    2. A005TVAE05
      Text in Illustration
      *1 O-Ring
      *2 Fuel Injector
      *3 Insulator
      *4 Fuel Delivery Pipe

      Install the injector into the delivery pipe and cylinder head as shown in the illustration. Apply grease or gasoline to the contact surfaces of the injector before installing the injector.

  5. FUEL SUCTION TUBE ASSEMBLY WITH PUMP AND GAUGE


    1. A005TOYE02
      Text in Illustration
      *1 Tube

      Do not disconnect the tube shown in the illustration when disassembling the fuel suction tube assembly with pump and gauge. Doing so will cause reassembly of the fuel suction tube assembly with pump and gauge to be impossible as the tube is welded to the plate.

  6. INSPECT FOR FUEL LEAK


    1. Check that there is no fuel leakage after performing maintenance anywhere on the fuel system Click here.