Installation [03/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.
- INSTALL CYLINDER HEAD GASKET
*a Lot No. - - Front of Engine - - - Clean the cylinder block sub-assembly and cylinder head sub-assembly with solvent.
- Place a new cylinder head gasket on the cylinder block sub-assembly as shown in the illustration.NOTE:
- Make sure that the cylinder head gasket is installed in the correct orientation.
- Remove any oil from the contact surfaces.
- INSTALL CYLINDER HEAD SUB-ASSEMBLY
Refer to PROCEDURE - Step 19 - INSTALL VALVE STEM CAP
Refer to PROCEDURE - Step 26 - INSTALL VALVE LASH ADJUSTER ASSEMBLY
Refer to PROCEDURE - Step 27 - INSTALL NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY
Refer to PROCEDURE - Step 28 - INSTALL NO. 2 CAMSHAFT
Refer to PROCEDURE - Step 23 - INSTALL CAMSHAFT
Refer to PROCEDURE - Step 24 - INSTALL CAMSHAFT BEARING CAP
Refer to PROCEDURE - Step 25 - INSTALL CAMSHAFT HOUSING SUB-ASSEMBLY
Refer to PROCEDURE - Step 29 - INSTALL FUEL PUMP LIFTER GUIDE
Refer to PROCEDURE - Step 30 - INSTALL TIMING CHAIN COVER ASSEMBLY
Refer to PROCEDURE - Step 33 - INSTALL CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY
Refer to PROCEDURE - Step 34 - SET NO. 1 CYLINDER TO TDC (COMPRESSION)
Refer to PROCEDURE - Step 35 - INSTALL NO. 1 CHAIN VIBRATION DAMPER
Refer to PROCEDURE - Step 36
- INSTALL CHAIN TENSIONER SLIPPER
Refer to PROCEDURE - Step 37
- INSTALL NO. 1 CHAIN TENSIONER ASSEMBLY
Refer to PROCEDURE - Step 38 - INSTALL CHAIN SUB-ASSEMBLY
Refer to PROCEDURE - Step 39 - INSTALL CAMSHAFT TIMING GEAR ASSEMBLY
Refer to PROCEDURE - Step 40 - INSTALL OIL PUMP DRIVE CHAIN SUB-ASSEMBLY
Refer to PROCEDURE - Step 41 - SET NO. 1 CYLINDER TO TDC (COMPRESSION)
Refer to PROCEDURE - Step 42 - INSTALL NO. 2 TIMING CHAIN COVER ASSEMBLY
Refer to PROCEDURE - Step 43 - INSTALL TIMING CHAIN COVER OIL SEAL
Refer to PROCEDURE - Step 45 - INSTALL SPARK PLUG TUBE GASKET
Refer to PROCEDURE - Step 46 - INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY
Refer to PROCEDURE - Step 47 - INSTALL WATER OUTLET PIPE GASKET
- INSTALL WATER BY-PASS OUTLET
Refer to PROCEDURE - Step 49 - INSTALL WATER OUTLET GASKET
- INSTALL WATER OUTLET
Refer to PROCEDURE - Step 51 - INSTALL CRANKSHAFT PULLEY ASSEMBLY
Refer to PROCEDURE - Step 52 - CONNECT NO. 2 WATER BY-PASS HOSE
- CONNECT NO. 1 WATER BY-PASS HOSE
- INSTALL NO. 1 VACUUM PUMP O RING
Refer to PROCEDURE - Step 1 - INSTALL VACUUM PUMP ASSEMBLY
Refer to PROCEDURE - Step 2 - INSTALL CAM TIMING CONTROL MOTOR O-RING
Refer to PROCEDURE - Step 1 - INSTALL CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY
Refer to PROCEDURE - Step 2 - INSTALL CAM TIMING OIL CONTROL SOLENOID O-RING
Refer to PROCEDURE - Step 1 - INSTALL CAM TIMING OIL CONTROL SOLENOID ASSEMBLY
Refer to PROCEDURE - Step 2 - INSTALL TIMING GEAR COVER INSULATOR
Refer to PROCEDURE - Step 70 - INSTALL OIL PRESSURE CONTROL VALVE ASSEMBLY
Refer to PROCEDURE - Step 1 - INSTALL PURGE VALVE (PURGE VSV)
Refer to PROCEDURE - Step 1
- INSTALL ENGINE OIL LEVEL DIPSTICK GUIDE
Refer to PROCEDURE - Step 6 - INSTALL IGNITION COIL ASSEMBLY
Refer to PROCEDURE - Step 2 - INSTALL FUEL INJECTOR SEAL
Refer to PROCEDURE - Step 1 - INSTALL INJECTOR VIBRATION INSULATOR
Refer to PROCEDURE - Step 2 - INSTALL C-RING
Refer to PROCEDURE - Step 3 - INSTALL NO. 1 FUEL INJECTOR BACK-UP RING
Refer to PROCEDURE - Step 4 - INSTALL NO. 3 FUEL INJECTOR BACK-UP RING
Refer to PROCEDURE - Step 5 - INSTALL NOZZLE HOLDER CLAMP
- INSTALL DIRECT FUEL INJECTOR ASSEMBLY
Refer to PROCEDURE - Step 7 - INSTALL FUEL DELIVERY PIPE
Refer to PROCEDURE - Step 8 - CONNECT WIRE HARNESS
- INSTALL PORT FUEL INJECTOR ASSEMBLY
Refer to PROCEDURE - Step 1 - INSTALL NO. 5 ENGINE WIRE
- INSTALL INJECTOR VIBRATION INSULATOR
- INSTALL NO. 1 DELIVERY PIPE SPACER
- INSTALL FUEL DELIVERY PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 5 - INSTALL NO. 7 WATER BY-PASS HOSE
- INSTALL FUEL PUMP LIFTER ASSEMBLY
Refer to PROCEDURE - Step 1 - INSTALL FUEL PUMP SPACER GASKET
- TEMPORARILY INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY
Refer to PROCEDURE - Step 3 - TEMPORARILY INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 4 - INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY
Refer to PROCEDURE - Step 5 - INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 6 - CONNECT FUEL TUBE SUB-ASSEMBLY
Refer to PROCEDURE - Step 7 - INSTALL NO. 1 INTAKE MANIFOLD TO HEAD GASKET
- INSTALL INTAKE MANIFOLD
Refer to PROCEDURE - Step 4 - INSTALL NO. 2 WATER BY-PASS PIPE
Refer to PROCEDURE - Step 6 - INSTALL NO. 3 WATER BY-PASS PIPE
Refer to PROCEDURE - Step 7 - SET EGR VALVE ASSEMBLY
Refer to PROCEDURE - Step 9 - INSTALL NO. 4 WATER BY-PASS HOSE
- INSTALL NO. 1 EGR COOLER GASKET
Refer to PROCEDURE - Step 3 - INSTALL EGR VALVE GASKET
Refer to PROCEDURE - Step 4 - INSTALL EGR COOLER ASSEMBLY
Refer to PROCEDURE - Step 5 - CONNECT NO. 4 WATER BY-PASS HOSE
- CONNECT NO. 3 WATER BY-PASS HOSE
- INSTALL EGR VALVE ASSEMBLY
Refer to PROCEDURE - Step 9 - INSTALL EGR INLET GASKET
- INSTALL EGR VALVE ADAPTER GASKET
- INSTALL NO. 1 EGR PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 12 - INSTALL THROTTLE BODY GASKET
Refer to PROCEDURE - Step 1 - CONNECT NO. 5 WATER BY-PASS HOSE
Refer to PROCEDURE - Step 2 - INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY
Refer to PROCEDURE - Step 3 - CONNECT NO. 6 WATER BY-PASS HOSE
Refer to PROCEDURE - Step 4 - INSTALL EXHAUST MANIFOLD TO HEAD GASKET
- INSTALL EXHAUST MANIFOLD (TWC: Front Catalyst)
Refer to PROCEDURE - Step 3 - INSTALL MANIFOLD STAY
Refer to PROCEDURE - Step 4 - INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
Refer to PROCEDURE - Step 6
- INSTALL NO. 2 WATER HOSE CLAMP BRACKET
- INSTALL FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY)
Refer to PROCEDURE - Step 55
- INSTALL NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY
Refer to PROCEDURE - Step 56 - INSTALL V-RIBBED BELT TENSIONER ASSEMBLY
Refer to PROCEDURE - Step 58 - INSTALL NO. 2 ENGINE COVER
Refer to PROCEDURE - Step 62
- INSTALL COMPRESSOR ASSEMBLY WITH PULLEY
Refer to PROCEDURE - Step 2 - INSTALL GENERATOR ASSEMBLY
Refer to PROCEDURE - Step 1
- INSTALL V-RIBBED BELT
Refer to PROCEDURE - Step 1 - INSTALL ENGINE HANGERS
See step 4 - REMOVE ENGINE ASSEMBLY FROM ENGINE STAND
See step 5