Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2008FORESTER F4-2.5L DOHC TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTEMISSION CONTROL SYSTEMSAIR INJECTIONAIR INJECTION CONTROL VALVESERVICE AND REPAIR
2008 Subaru Forester F4-2.5L DOHC Turbo
Air Injection Control Valve: Service and Repair
2008 Subaru Forester F4-2.5L DOHC TurboSECTION Service and Repair
Secondary Air Combination Valve
REMOVAL
1. SECONDARY AIR COMBINATION VALVE LH
1. Disconnect the ground cable from the battery.
2. Remove the intercooler.
3. Disconnect the connector from the secondary air combination valve LH.
4. Disconnect the air duct.
5. Disconnect the pipe LH.
6. Remove the secondary air combination valve LH.
2. SECONDARY AIR COMBINATION VALVE RH
1. Disconnect the ground cable from the battery.
2. Remove the intercooler.
3. Remove the secondary air combination valve LH.
4. Remove the intake manifold.
5. Disconnect the connector from the secondary air combination valve RH.
6. Disconnect the pipe RH.
7. Remove the secondary air combination valve RH.
INSTALLATION
1. SECONDARY AIR COMBINATION VALVE LH
Install in the reverse order of removal.
NOTE: Use a new gasket.
2. SECONDARY AIR COMBINATION VALVE RH
Install in the reverse order of removal.
NOTE: Use a new gasket.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.