Where is the PCV valve located on a 1999 Nissan Quest?

On a 1999 Nissan Quest, the PCV (Positive Crankcase Ventilation) valve is typically located on the upper part of the engine, near the intake manifold. It is often found on the valve cover, connected to a hose that leads to the intake. To access it, you may need to remove some components for better visibility and reach. Always consult the vehicle's service manual for specific details and diagrams.