Where Is The PCV Valve On A 2007 Jeep Commander?

Where Is The PCV Valve On A 2007 Jeep Commander? Engine misfires at idle. Lean air-fuel mixture. Presence of engine oil in PCV valve or hose. Increased oil consumption. Hard engine start. Rough engine idle. Possibly black smoke. Oil fouled spark plugs. What are signs of a bad PCV valve? Engine misfires at idle. Lean