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PCV Valve: What Is It?

Posted February 20, 2022 12:09 PM

Most Willoughby drivers know something about preventive maintenance on a vehicle. We know we should routinely replace the oil and wiper blades and other fluids. But have you heard of a PCV valve ? This little car part needs to be replaced regularly or it can cause some serious problems in your vehicle engine.

PCV stands for Positive Crankcase Ventilation. The crankcase holds your motor oil and is located at the bottom of your engine.

When fuel is burned in your engine, it produces waste gases that are mostly vented out through your exhaust system. But some of these gases push their way past the pistons and into the crankcase. There, these gases can mix with motor oil to produce oil sludge, which can damage vehicle engine parts through corrosion and by clogging engine passages. Willoughby vehicle owners should be advised that if the engine is running at high speeds, these gases can also cause pressure inside the crankcase to build up. This pressure, in turn, can blow gaskets and damage seals, leading to oil leaks.

The waste gases that leave the engine are comprised of about 70% unburned fuel. They used to be vented off the crankcase into the atmosphere. But starting in 1964, laws mandated that these gases be recaptured. Manufacturers began installing PCV systems, which recycled the gases into the air intake system where they could be mixed with fuel and sent to the engine to be burned.

The PCV valve is a one-way valve attached to the crankcase. Waste gases exit the crankcase through the valve but cannot enter.

Over time, the waste gases leave deposits on the PCV valve that can gum it up. So it needs to be replaced occasionally. This is an inexpensive part of preventive maintenance that is often overlooked, but which can have very expensive consequences. It's good auto advice to keep this little valve clean and working well.

In order to maintain efficient circulation, the PCV system also has a breather tube that allows clean air to enter the crankcase. This air is usually filtered through the engine air filter. But some vehicles have a separate air filter for the breather tube called the breather element. If this is the case with your vehicle, proper maintenance of the PCV will include replacing this element. To find out whether your vehicle has this type of PCV system, check your owner's manual or ask your service advisor at Lakeside Certified Auto.

The PCV system reduces harmful vehicle emissions. The maintenance it requires is simple and inexpensive at Lakeside Certified Auto. A fouled or damaged PCV system can lead to serious engine damage for Willoughby drivers.

Let's all learn to practice good car care. It's good for our wallets, and it's good for our OH environment.

Lakeside Certified Auto
38525 Lakeshore Blvd
Willoughby, OH 44094
(440) 946-0076
http://www.lakesidecertifiedauto.com



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What People Say About Us

  • reviewicon
    , 03/05/2024

    Good honest folks! Very pleasant and very informative and VERY helpful!

  • reviewicon
    , 01/07/2024

    Awesome shop. Had work done on my 2016 KIA a few times and the work was exemplary and the cost was reasonable. I highly recommend!

  • reviewiconTires, near Willoughby, OH
    , 12/11/2023

    Great service! Very conscientious and highly communicative with car owner. Had tires replace at 71K miles. Tech called about needing rear brakes and rotors. Provided cost and I immediately approved. Picked up SUV a little later. These are great technicians and very honest. I highly recommend and will be back.

  • reviewiconTires, near Willoughby, OH
    , 12/13/2023

    I been having my car worked on there for quite a few years now. My son's child hood friend work there. He a 5 star mechanic. The business there is top notch. The price is very good. I come all the way from the Westside of Cleveland to Willoughby Ohio because it's hard to find a good mechanic shop.

  • reviewicon
    , 11/30/2023

    This was my first visit to this neighborhood business and we were very impressed. They checked my concerns, found nothing wrong, and we weren't charged. What I needed would have required a fair amount of time and effort ... no charge! We will definitely return for any service needs for our 2 cars. Thank you Lakeside Auto.

  • reviewicon
    , 11/18/2023

    Used to live nearby, moved 30 miles east and still make the trip because of fair prices and honest service I trust.

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