What is a PCV Valve? Save money on your next oil change by checking your air filter and PCV valve yourself and save unnecessary replacements.

A general recommendation is to replace the positive crankcase ventilation, or PCV, valve every 30,000 to 50,000 miles.

Got a check engine light and it's returning a code for a faulty PCV valve? Swap it out yourself by checking out our top picks of the best PCV valves.

Among other things pertaining to the health of your engine, replacing your vehicle's PCV valve is a regular item of maintenance that's pretty simple to do.

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...

A properly functioning PCV system is essential for maximum engine performance. Here are the key essentials to consider.

The bottom line is this: Your service sales staff should understand that a neglected PCV system may cause oil leaks. It also can adversely affect engine performance and gas mileage, but that's another ...

Popular Mechanics’s automotive experts outline the tools and techniques proven to smoke out even the toughest to find vacuum leaks.