Learn how to replace a PCV valve, prevent engine issues, and ensure smooth performance with AutoZone.

Jun 13, 2025 · Learn what a PCV valve is, how it works, where it's located, and the symptoms of a bad or clogged PCV valve. Find out when to replace it and how much it costs.

Dec 12, 2025 · Replacing a bad PCV valve won’t be too costly, and many owners can replace this part on their own. The part itself costs about $10 or $20, while the labor costs to replace the valve will be …

Learn how to diagnose and replace a failing PCV valve in your car, truck, or SUV with these step-by-step instructions from O’Reilly Auto Parts.

Sep 30, 2025 · A faulty PCV valve can cause various issues that affect your vehicle’s performance, fuel efficiency, and engine health. While some symptoms might seem minor at first, ignoring them can …

Jun 8, 2025 · Although some maintenance schedules include an interval for replacing the positive crankcase ventilation, or PCV, valve, others may not. In the latter case, a general recommendation is …

Nov 28, 2025 · PCV valve replacement explained with signs when it goes bad, the best way to test it, and how to swap it out.

Oct 8, 2024 · The PCV (positive crankcase ventilation) valve is a one-way valve that recycles crankcase gases back into the engine to burn. A plugged PCV valve can result in a rough idle and poor mileage.

Expert DIY instructions for replacing the PCV valve. Maintain critical engine ventilation and avoid common performance issues.

The customer wanted to replace the PCV valve and Spark plugs. I'll first show you how to replace the PCV valve without removing the intake manifold.