Intake Manifold: Installation

Install the intake manifold onto cylinder heads.
NOTE: Use a new gasket.

Tightening torque:

25 N.m (2.5 kgf-m, 18.4 ft-lb)

Fig 1: Locating Intake Manifold From Cylinder Head Bolts
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Connect the fuel delivery hose, fuel return hose, and evaporation hose.

Fig 2: Identifying Fuel Delivery Hose, Fuel Return Hose And Evaporation Hose
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Connect the front oxygen (A/F) sensor connector, and secure the engine harness to the rocker cover RH with clip (A) and stay (B).
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

Fig 3: Locating Front Oxygen (A/F) Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Connect the connector to the ignition coil.

Fig 4: Locating Ignition Coil Connector
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Connect the air duct to the secondary air pump, and install the air duct on the rocker cover LH.
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

Fig 5: Locating Bolts Air Duct On Rocker Cover LH
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Connect the connector to oil flow control solenoid valve.

Fig 6: Locating Oil Flow Control Solenoid Valve Connector
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Connect the connectors to camshaft position sensor.

Fig 7: Locating Camshaft Position Sensor Connectors
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Connect the connector to the secondary air combination valve.

Fig 8: Locating Secondary Air Combination Valve Connector
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Connect the connector to the power steering pump switch.

Fig 9: Locating Power Steering Pump Switch Connector
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Connect the connector (A) to the engine coolant temperature sensor, connector (B) to the oil pressure switch, and the connector (C) to the crankshaft position sensor.

Fig 10: Identifying Engine Coolant Temperature Sensor Connector And Oil Pressure Switch Connector
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Install the engine harness connector to engine harness bracket, then connect the bulkhead harness connector to the engine harness connector.

Fig 11: Locating Bulkhead Harness Connectors From Engine Harness Connectors
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Connect the air control hose (A) to the waste-gate actuator, and install the turbocharger to the intake duct.
Tightening torque:

3 N.m (0.3 kgf-m, 2.2 ft-lb)

Fig 12: Identifying Air Control Hose
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Connect the vacuum hose to the rocker cover.

Fig 13: Locating Vacuum Hose From Rocker Cover
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Connect the brake booster vacuum hose.

Fig 14: Locating Brake Booster Vacuum Hose
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Connect the vacuum hose to the nipple.

Fig 15: Locating Vacuum Hose From Nipple
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Connect the engine coolant hoses to throttle body.

Fig 16: Locating Engine Coolant Hose To Throttle Body
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Install the intake duct to the throttle body.
Tightening torque:

3 N.m (0.3 kgf-m, 2.2 ft-lb)
Attach the bolts which secure the air by-pass pipe and PCV pipe to the intake manifold.
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)

Fig 17: Locating Bolts Air By-Pass Pipe And PCV Pipe To Intake Manifold
Courtesy of SUBARU OF AMERICA, INC.
Connect the connector (A) to the PCV hose assembly and the connector (B) to the knock sensor.

Fig 18: Identifying PCV Hose Assembly Connector And Knock Sensor Connector
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Install the A/C pressure hoses to A/C compressor. < Ref. to INSTALLATION , Hose and Pipe. >
Install the coolant filler tank. < Ref. to INSTALLATION , Coolant Filler Tank. >
Install the generator. < Ref. to INSTALLATION , Generator. >
Install the intercooler. < Ref. to INSTALLATION , Intercooler. >
Install the air intake duct (rear) and air cleaner case. < Ref. to INSTALLATION , Air Cleaner Case. > < Ref. to INSTALLATION , Air Intake Duct. >
Connect the battery ground terminal.

Fig 19: Connecting Battery Ground Terminal
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Lift up the vehicle.
Install the under cover. < Ref. to INSTALLATION , Front Under Cover. >
Lower the vehicle.
Fill engine coolant. < Ref. to FILLING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant. >
Charge the A/C system with refrigerant. < Ref. to PROCEDURE , Refrigerant Charging Procedure. >
Install the collector cover.