The Positive Crankcase Ventilation (PCV) valve on the 2004 Mazda 6 with a 6-cylinder engine is located on the intake manifold, usually towards the rear of the engine. It connects to the valve cover and helps regulate the flow of crankcase gases back into the intake system. To access it, you may need to remove some components for better visibility and reach.
Copyright © 2026 eLLeNow.com All Rights Reserved.