FUEL SYSTEM PRECAUTION


  1. PRECAUTION


    1. Before working on the fuel system, disconnect the cable from the negative (-) battery terminal.

    2. Do not smoke or work near fire when working on the fuel system.

    3. Keep gasoline away from rubber or leather parts.

  2. DISCHARGE FUEL SYSTEM PRESSURE

    CAUTION:


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

    • 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. When discharging fuel system pressure by disconnecting the C/OPN relay:


      1. Remove the relay block cover.

      2. A01CEMQE01

        Remove the C/OPN relay.

      3. Start the engine.

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

        Tech Tips

        DTC P0171/25 (fuel problem) may be detected.

      5. Crank the engine again. Check that the engine does not start.

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

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

      8. Install the C/OPN relay.

    2. When discharging fuel system pressure by disconnecting the fuel pump connector:


      1. Remove the No. 1 rear seat.

      2. Remove the seat rail cover.

      3. A01CB0QE01

        Turn back the carpet and remove the rear floor service hole cover.

      4. A01CCMF

        Disconnect the fuel pump connector.

      5. Start the engine.

      6. After the engine stops, turn the engine switch off.

        Tech Tips

        DTC P0171/25 (fuel problem) may be detected.

      7. Crank the engine again. Check that the engine does not start.

      8. Remove the fuel tank cap to discharge pressure from the fuel tank.

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

      10. Reconnect the fuel pump connector.

      11. Install the rear floor service hole cover.

      12. Install the seat rail cover.

      13. Install the No. 1 rear seat.

  3. FUEL LINE


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


      1. Discharge fuel system pressure.

      2. Disconnect the fuel tank main tube Click here.

      3. Drain the fuel that remains in the fuel tank main tube.

      4. A01CD0CE07

        To protect the disconnected fuel tank main tube from damage and contamination, cover it with a plastic bag.

      5. Put a container under the connectors.

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


      1. A01CFF6E01

        Remove the fuel pipe clamp.

      2. Check that there is no dirt or other foreign objects on the pipe and around the connector before disconnecting them. Clean them if necessary.

      3. A01CBVIE10

        Disconnect the connector from the pipe by hand.

        Note

        Be sure to disconnect the connector by hand.

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

        Note

        Be sure to disconnect the connector by hand.

      5. Check that there is no dirt or other foreign objects on the sealing surfaces of the disconnected pipes. Clean the surfaces if necessary.

      6. A01CAQLE04

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

    3. A01CEK2E01

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


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

      2. Line up the 2 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. Check for fuel leaks.

    4. A01CCSYE01

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

        Note

        Be sure to disconnect the connector by hand.

      3. A01CEPME06

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

        Note

        Be sure to disconnect the connector by hand.

      4. Check if there is any dirt or any other foreign objects on the sealing surfaces of the disconnected pipes. Clean the sealing surfaces if necessary.

      5. A01CCLZE03

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

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


      1. A01CE93E01

        Line up the 2 parts of the pipes to be connected, and fully push the fuel tube connector and pipe together until they are fully seated. Next, push the retainer into the connector until its claws lock. 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.

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

      3. Check for fuel leaks.

    6. Observe the following precautions when handling a nylon tube:

      CAUTION:


      • Do not twist the connection part of the nylon tube or the quick connector when connecting them.

      • Do not bend or twist the nylon tube.

      • Do not remove the EPDM protector on the outside of the nylon tube.

      • Do not pinch or kink the nylon tubes to prevent fuel leaks.

  4. FUEL INJECTOR


    1. A01CDXQE01

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


      1. Never reuse an O-ring.

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

      3. Coat a new O-ring with spindle oil or gasoline before installing it.

        Note

        Do not use engine oil, gear oil or brake fluid.

    2. A01CEN6E02

      Install the injector to the delivery pipe and the lower intake manifold as shown in the illustration.

      Note

      Before installing the injector, be sure to apply appropriate lubricant or gasoline where the delivery pipe or cylinder head contacts the injector O-rings.

  5. FUEL SUCTION TUBE ASSEMBLY WITH PUMP AND GAUGE


    1. A01CD67E01

      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.