Subaru 16611AA720 Fuel Injector Sub Assembly

On non-turbo models, depressurize the fuel system and disconnect the negative battery terminal. Disconnect spark plug wires from cylinders 1 and 3. Unbolt the power steering pump and remove the fuel rail protector. Disconnect the electrical connectors from the fuel injectors and the fuel line fitting. Remove the fuel rail and injectors as a unit. Plug the injector holes in the intake manifold. Remove the old O-rings from each injector and replace them with new ones. Reinstall the injectors and fuel rail. For the left fuel rail, remove the windshield washer fluid reservoir and disconnect spark plug wires from cylinders 2 and 4. Disconnect the PCV hose and remove the fuel rail protector. Disconnect the injector harness and remove the fuel rail and injectors as a unit. Replace the O-rings as before. For turbo models, remove the intake manifold and disconnect the fuel injector electrical connector. Remove the fuel rail cover and lift up the rail to remove the injectors. Replace the O-rings and reinstall.