* The positive crankcase ventilation (PCV) valve in most 2011 Nissan Rogues is located on the upper portion of the engine, slightly set back toward the firewall but visible from the front of the engine compartment.
* The PCV valve looks like a small black cylindrical device with two attached hoses going to it.
* Pull up the valve from its grommet and replace the old PCV valve with a new one.
