Fuel System 1
3UR-FE FUEL: FUEL SYSTEM: PRECAUTION
CAUTION:
* Before working on the fuel system, disconnect the cable from the negative (-) battery terminal.
* Do not smoke or be near an open flame when working on the fuel system.
* Keep gasoline away from rubber and leather parts.
1. DISCHARGE FUEL SYSTEM PRESSURE
CAUTION:
* Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.
* After discharging the fuel pressure, place a cloth or equivalent over fittings as you separate them to reduce the risk of fuel spray on yourself or in the engine compartment.
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the fuel pump ECU connector Removal.
(c) Connect the cable to the negative (-) battery terminal.
(d) Start the engine. After the engine has stopped on its own, turn the ignition switch OFF.
HINT
DTC P0171/0174 (system too lean) may be set.
(e) Crank the engine again, then check that the engine does not start.
(f) Loosen the fuel tank cap, then discharge the pressure in the fuel tank completely.
(g) Connect the fuel pump ECU connector Installation.
2. FUEL SYSTEM
(a) When disconnecting the high fuel pressure line, a large amount of gasoline will spill out. Follow these procedures.
(1) Perform the "DISCHARGE FUEL SYSTEM PRESSURE" procedures above.
(2) Put a container under the connecting part of the pressure line.
(3) Slowly loosen the connection.
(4) Disconnect the connection.
(5) Plug the connection with a rubber plug.
(b) Observe these precautions when removing and installing the injectors:
Never reuse the O-ring.
When placing a new O-ring on the injector, do not damage it.
Coat a new O-ring with spindle oil or gasoline before installing it. Do not use engine oil, gear oil or brake oil.
(c) Install the injector to the delivery pipe and intake manifold as shown in the illustration.
NOTICE:
Before installing the injector, apply spindle oil or gasoline on the place where the delivery pipe contacts the O-ring of the injector.
Observe these precautions when disconnecting the fuel tube connector (for metallic type):
NOTICE:
Do not forcibly bend or twist the fuel main tube.
(1) Remove the No. 2 fuel pipe clamp.
NOTICE:
Do not reuse the No. 2 fuel pipe clamp.
(2) Wipe off any dirt on the fuel tube connector.
(3) Hold the fuel tube connector and install SST.
SST : 09268-21011
(4) Turn SST to align the retainer inside the fuel tube connector with the chamfered part of SST.
(5) Insert SST into the fuel tube connector and hold it. Then push the fuel tube connector toward SST.
(6) Mount the retainer of the fuel tube connector onto the chamfered part of SST.
Slide SST and the fuel tube connector together towards the fuel tube until they make a "click" sound, and then disconnect the fuel tube.
HINT
The structure of a fuel tube connector is as shown in the illustration.
(8) Drain the fuel remaining inside the fuel tube.
(9) Cover the fuel tube and fuel pipe with a plastic bag to protect the disconnected parts.
(e) Observe these precautions when connecting the fuel tube connector (for metallic type):
(1) Check if there is any damage or foreign objects on the pipe connection area.
(2) 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) Install a new No. 2 fuel pipe clamp.
(5) Check that there is no fuel leakage.
(f) Observe these precautions when disconnecting the fuel tube connector (for quick type).
(1) for Fuel Hose Connector Cover Type:
Detach the lock claw by lifting up the cover, as shown in the illustration.
(2) for Fuel Pipe Clamp Type:
Remove the fuel pipe clamp from the fuel tube connector.
(3) Check for dirt or mud on the pipe and around the connector before disconnection. Clean if necessary.
(4) Pinch the connector and disconnect the connector and pipe.
If the connector and the pipe are stuck together, pinch the connector, push and pull the pipe to disconnect the pipe and pull it out.
NOTICE:
Do not use any tools.
(5) Check for dirt or mud on the seal surface of the disconnected pipe. Clean if necessary.
(6) To protect the disconnected pipe and connector from damage and contamination, cover it with a plastic bag.
(g) Observe these precautions when connecting the fuel tube connector (for quick type).
(1) Check that there is no damage or contamination in the connected part of the pipe.
(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 tight, apply a small amount of fresh spindle oil or gasoline on the tip of the pipe.
(3) After having finished the connection, try to pull apart the pipe and the connector to confirm that they are securely connected.
(4) for Fuel Pipe Clamp Type:
Install the fuel pipe clamp to the connector.
(5) for Fuel Hose Connector Cover Type:
Attach the lock claw to the connector by pushing down on the cover, as shown in the illustration.
(6) Check that there is no fuel leakage.
3. CHECK FOR FUEL LEAK
(a) Check that there are no fuel leaks after performing maintenance anywhere on the fuel system Fuel System.