Inspect the oil drain back access hole in the intake manifold/cylinder head cover to assure that it is free of obstruction.Lubricate the oil separator o-rings with clean engine oil.Carefully position and push down on the oil separator to seat.Install the oil separator retaining fasteners. Tighten fasteners to 10.8 N·m (96 lbs. in.).Install the camshaft cover.(Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) - INSTALLATION)