LX 450 L6-4.5L (1FZ-FE) (1996)
Fuel Tank: Service Precautions
Before working on the fuel system, disconnect the negative (-) terminal cable from the battery.
HINT:
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Any diagnostic trouble code retained by the computer will be erased when the negative (-) terminal cable is disconnected.
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Therefore. if necessary, read the diagnosis before disconnecting the negative (-) terminal cable from the battery.
1. IN THE EVENT OF ENGINE MISFIRE, THE FOLLOWING PRECAUTIONS SHOULD BE TAKEN
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Check proper connection of battery terminals, etc.
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Handle high-tension cords carefully.
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After repair work, check that the ignition coil terminals and all other ignition system lines are reconnected securely.
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When cleaning the engine compartment, be especially careful to protect the electrical system from water.
2. PRECAUTIONS WHEN HANDLING OXYGEN SENSOR
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Do not allow the oxygen sensor to drop or hit against an object.
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Do not allow the sensor to come in contact with water.
FUEL SYSTEM
1. When disconnecting the high fuel pressure line, a large amount of gasoline will spill out, so observe these procedures:
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Disconnect the fuel pump connector.
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Start the engine. After the engine has stopped on its own, turn the ignition switch OFF.
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Put a container under the connection.
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Slowly loosen the connection.
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Disconnect the connection.
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Plug the connection with 2 rubber plugs.
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Reconnect the fuel pump connector.
2. When connecting the flare nut or union bolt on the high pressure pipe union, observe these procedures:
Union Bolt Type:
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Always use a new gasket.
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Tighten the union bolt by hand.
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Tighten the union bolt to the specified torque.