FUEL SYSTEM > PRECAUTION

for Preparation Click here

CAUTION:

1. Before working on the fuel system, disconnect the cable from the negative (-) battery terminal.
   
2. Do not smoke or work near an open flame when working on the fuel system.
   
3. Keep gasoline away from rubber or leather parts.
   

CAUTION:

1. Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.
   

1. Even after discharging the fuel pressure, place a shop rag over fittings as you separate them to reduce risk of fuel spray on yourself or in the engine compartment.
   

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

   CAUTION:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.





2. Disconnect the fuel pump connector.
   

3. Connect the cable to the negative (-) battery terminal.
   

4. Start the engine. After the engine has stopped on its own, turn the engine switch off.
   

   HINT:

   DTC P0171/P0172 (system too lean) may be set.

5. Crank the engine again, then check that the engine does not start.
   

6. Loosen the fuel tank cap, then discharge the pressure in the fuel tank completely.
   

7. Connect the fuel pump connector.
   

1. When disconnecting the high pressure fuel line, a large amount of gasoline will spill out. Follow these procedures.
   
   

   1. Discharge the fuel system pressure.
      

   2. Put a container under the connection.
      

   3. Disconnect the fuel pump tube.
      

   4. Drain the fuel remaining inside the fuel pump tube into the container.
      

   
   
   

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





2. Observe these precautions when removing and installing the injector.
   
   

   1. Never reuse the O-rings.
      

   2. When placing a new O-ring on the injector, take care not to damage it.
      

   3. Coat new O-rings with grease or gasoline before installing them. Never use engine, gear or brake oil.
      





3. Install the injector to the delivery pipe and cylinder head, as shown in the illustration. Before installing the injector, be sure to apply grease or gasoline where the delivery pipe contacts the O-ring.
   





4. Observe these precautions when disconnecting the fuel tube connector (quick type A).
   
   

   1. With fuel pipe clamp type: Remove the fuel pipe clamp.
      

   
   
   

   2. With fuel hose connector cover type: Detach the lock claw by lifting up the cover, as shown in the illustration.
      

   3. Check for foreign matter on the pipe and around the connector before disconnecting it. Clean it if necessary.
      

   
   
   

   4. If the connector and pipe are stuck, pinch the connector, and push and pull the pipe to disconnect them.
      

      NOTICE:

      Do not use any tools in this procedure.

   5. Check for foreign matter on the seal surface on the disconnected pipe. Clean it if necessary.
      

   
   
   

   6. To protect the disconnected pipe and connector from damage and foreign matter, cover it with a plastic bag.
      





5. Observe these precautions when connecting the fuel tube connector (quick type).
   
   

   
   
   

   1. Check that there is no damage or foreign matter on the part of the pipe that contacts the connector.
      

   2. Align the axis of the connector with the axis of the pipe. Push the pipe into the connector until the connector makes a "click" sound. If the connection is too tight, apply a small amount of fresh engine oil on the tip of the pipe.
      

   
   
   

   3. After connecting the pipe and connector, try to pull them apart to confirm that they are securely connected.
      

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

1. Check that there are no fuel leaks after performing maintenance anywhere on the fuel system (Click here).
   

1. Perform initialization (Click here).
   

   NOTICE:

   Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.