Fuel System

SFI SYSTEM

PRECAUTION

1. BEFORE WORKING ON FUEL SYSTEM, DISCONNECT NEGATIVE (-) TERMINAL CABLE FROM BATTERY

HINT: Any diagnostic trouble code retained by the computer will be erased when the negative (-) terminal cable is removed from the battery. Therefore, if necessary, read the diagnosis before removing the negative (-) terminal cable from the battery.

2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME WHEN WORKING ON FUEL SYSTEM

3. KEEP GASOLINE AWAY FROM RUBBER OR LEATHER PARTS

4. FUEL SYSTEM
a. When disconnecting the high fuel pressure line, a large amount of gasoline will spill out, so observe these procedures.
1. Disconnect the fuel pump connector.
2. Start the engine. After the engine has stopped on its own, turn the ignition switch to LOCK.
3. Disconnect the fuel tube.
4. Drain the fuel remained inside the fuel tube.




5. Prevent the disconnected fuel tube from damaging and mixing foreign objects by covering them with a vinyl bag.




6. Put a container under the connection.




b. Observe these precautions when removing and installing the injectors.
1. Never reuse the O-ring.
2. When placing a new O-ring on the injector, take care not to damage it in any way.
3. Coat a new O-ring with spindle oil or gasoline before installing-never use engine, gear or brake oil.




c. Install the injector to the delivery pipe and intake manifold, as shown in the illustration.
Before installing the injector, must apply spindle oil or gasoline on the place where a delivery pipe or an intake manifold touches an O-ring of the injector.




d. Observe these precautions when disconnecting the fuel tube connector (quick type).
1. Remove the fuel pipe clamp.
2. Check if there is any dirt like mud on the pipe and around the connector before disconnecting them and clean the dirt away.




3. Be sure to disconnect with hands.
4. When the connector and the pipe are stuck, pinch the retainer between the hands, push and pull the connector to free to disconnect and pull it out. Do not use any tool at this time.
5. Inspect if there is any dirt or the like on the seal surface of the disconnected pipe and clean it away.






HINT: When the connector and the pipe are stuck, pinch the fuel pipe between the hands, push and pull the connector to free to disconnect and pull it out. Do not use any tool at this time.

6. Inspect if there is any dirt or the like on the seal surface of the disconnected pipe and clean it away.




7. Prevent the disconnected pipe and connector from damaging and mixing foreign objects by covering them with a vinyl bag.




e. Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.
1. Connect the LEXUS hand-held tester or OBD II scan tool to the DLC3.
2. Turn the ignition switch ON and push LEXUS hand-held tester or OBD II scan tool main switch ON.

NOTE: Do not start the engine.

3. Select the active test mode on the LEXUS hand-held tester or OBD II scan tool.
4. Please refer to the LEXUS hand-held tester or OBD II scan tool operator's manual for further details.
5. If you have no LEXUS hand-held tester or OBD II scan tool, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
6. Check that there are no leaks from any part of the fuel system.
7. Turn the ignition switch to LOCK.
8. Disconnect the LEXUS hand-held tester or OBD II scan tool from the DLC3.