Removal [10/2022 - 08/2023]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- PRECAUTION NOTE:
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
- DISCHARGE FUEL SYSTEM PRESSURE
Refer to PRECAUTION [10/2022 - 08/2023]
- REMOVE BATTERY SERVICE COVER PLATE
Refer to PROCEDURE - Step 2
- DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
Refer to PROCEDURE - Step 3
- REMOVE INTAKE MANIFOLD
Refer to REMOVAL [10/2022 - 08/2023]
- REMOVE FUEL PIPE CLAMP
Refer to PROCEDURE - Step 7
- DISCONNECT FUEL TUBE SUB-ASSEMBLY
Refer to PROCEDURE - Step 8 - REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 9 - REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY
Refer to PROCEDURE - Step 10 - REMOVE FUEL PUMP SPACER GASKET
Refer to PROCEDURE - Step 11
- REMOVE FUEL PUMP LIFTER ASSEMBLY
Refer to PROCEDURE - Step 12
- DISCONNECT WIRE HARNESS
- REMOVE FUEL DELIVERY PIPE NOTE:
- If fuel intrudes into the combustion chamber, there may be adverse affects to the engine main body.
- When replacing the fuel delivery pipe, it is necessary to replace the No. 1 fuel pipe sub-assembly with a new one.
- Make sure not to touch or strike the tips of the direct fuel injector assemblies.
- Pull and remove the fuel delivery pipe in a straight line without tilting it.
- REMOVE DIRECT FUEL INJECTOR ASSEMBLY
- Secure the fuel delivery pipe in a vise between aluminum plates.
- Pull out the 4 direct fuel injector assemblies.NOTE:
- Pull and remove each direct fuel injector assembly in a straight line to avoid damaging the seal surface of the fuel delivery pipe O-ring.
- After removing the direct fuel injector assemblies, remove any O-rings, No. 1 fuel injector back-up rings and No. 3 fuel injector back-up rings remaining on the fuel delivery pipe side.
- Attach a tag or label with the corresponding cylinder number to each direct fuel injector assembly so that they can be installed to their original locations.
- Cover the tip of each direct fuel injector assembly to prevent it from being damaged.
- REMOVE NOZZLE HOLDER CLAMP
- REMOVE NO. 3 FUEL INJECTOR BACK-UP RING NOTE:
Do not damage the area that contacts the O-ring.
- REMOVE NO. 1 FUEL INJECTOR BACK-UP RING
- REMOVE C-RING
- REMOVE INJECTOR VIBRATION INSULATOR
- REMOVE FUEL INJECTOR SEAL
- Using the tip of needle nose pliers, pinch and pull the fuel injector seal at several points to stretch it.NOTE:
- Excessively pinching the fuel injector seal may damage the groove of the direct fuel injector assembly.
- If a direct fuel injector assembly is dropped or the tip of the direct fuel injector assembly is struck, replace it with a new one.
- Remove the fuel injector seal from each direct fuel injector assembly.
- Using the tip of needle nose pliers, pinch and pull the fuel injector seal at several points to stretch it.