In case of four-cylinder models, disconnect the fresh air inlet hose from the air intake duct assembly and remove the air intake duct assembly. Next, disconnect the fresh air inlet hose from the pipe located at the left rear corner of the valve cover, clean and inspect the hose for damage, and replace if necessary. Lastly, look for wear in the grommet in the air intake duct. Install using the reverse order. At the upper left side of the crankcase vent oil separator, the PCV valve has a vent hose that routes to the intake manifold, disconnect it from the valve and the manifold. Clean out the PCV hose and inspect for damage. To install, follow the reverse procedure of removal." The crankcase vent oil separator for 2012 and earlier models is located on the front side of the engine block. To access it, remove the
Catalytic Converter and exhaust manifold. Then, disconnect the PCV hose and remove the separator. Clean the separator and install a new gasket. For the 2013 and newer models, take off the intake manifold, loosen the hose clip if necessary, and then unbolt the oil separator from the engine block. For V6 models, you must first remove the fresh air inlet hose from the front valve cover and rear valve cover, and also from the air intake duct. Then, installation is the reverse order of removal. Disconnect the PCV hose from the PCV valve and intake manifold, remembering its routing before removal. To remove the PCV valve on 2004 and earlier models, you need to disconnect the hose and unscrew it from the crankcase vent oil separator. For 2005 through 2012 models, disconnect the quick-connect coupling and wiring if equipped, then turn the valve counterclockwise for removal and discard the old valve. To remove the crankcase vent oil separator on 2004 and earlier models, remove the intake manifold, disconnect the PCV hose, and the front cylinder head. Also, remove the separator and clean it thoroughly and use a new gasket.