The PCV (positive crankcase ventilation) valve in the VQ40DE 4.0 liter V6 motor in a 2nd generation (2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 & 2016) Nissan Frontier pickup truck should be checked every 15,000 miles and replaced about every 45,000 to 60,000 miles. Check out my DIY instructions for the procedure (with the replacement part numbers) by clicking on the text link or thumbnail image below.
2005-2016 Nissan Frontier PCV Valve Replacement Guide
