Subaru 16611AA720 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.

Remove the bolts securing the windshield washer fluid reservoir and set aside after disconnecting necessary components.Disconnect the spark plug wires for the No.2 and No. 4 cylinders.Disconnect the PCV hose from the left valve cover.Remove the fuel rail protector(s).Disconnect the electrical connectors from the injectors.Remove the fuel hoses and fuel rail mounting bolts.Pull out the fuel rail and injectors.Replace the injector O-rings.

Remove the air intake duct, resonator, and air filter housing. Disconnect spark plug wires for No. 1 and No. 3 cylinders. Unbolt the power steering pump and set it aside (for 2007 and earlier models). Remove the power steering fluid reservoir and set it aside. Remove the fuel rail protector. Disconnect electrical connectors from the fuel injectors. Disconnect the fuel line fitting. Remove the fuel rail mounting bolts. Remove the fuel rail and injectors from the intake manifold as a single assembly.