Fuel System

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.
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work .

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.

NOTICE:
* When disconnecting the cable some systems need to be initialized after the cable is reconnected .

(b) Turn the lock lever and disconnect the connector of the fuel pump ECU.





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(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, and then check that the engine does not start.

(f) Loosen the fuel tank cap, and then discharge the pressure in the fuel tank completely.

(g) Connect the connector of the fuel pump ECU.





(h) Turn the lock lever and secure the connector with the lock lever.

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2. FUEL SYSTEM

(a) When disconnecting the high pressure fuel 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:





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NOTICE:
* 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.





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NOTICE:
Before installing the injector, apply spindle oil or gasoline on the place where the delivery pipe contacts the O-ring of the injector.

(d) 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.





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(2) for Fuel Pipe Clamp Type:

Remove the fuel pipe clamp from the fuel tube connector.





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(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.





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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.





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





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(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.





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(4) for Fuel Pipe Clamp Type:

Install the fuel pipe clamp to the connector.





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(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.





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(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 .