How to Replace a Positive Crankcase Ventilation (PCV) Valve | YourMechanic Advice

How to Replace a Positive Crankcase Ventilation (PCV) Valve

The positive crankcase ventilation (PCV) valve is incorporated into current production engines to aid in improving emissions. As an internal combustion engine operates, it builds up pressure inside the engine, through several different factors. This pressure needs to be dealt with in a way that is safe for the environment. This is done is by recirculating the pressurized vapors back into the engine, where the vapors can be burned off by the heat produced in the combustion process. If your PCV valve is bad, it will result in oil leaking and poor engine performance in general.

Method 1 of 1: Replacing a positive crankcase ventilation (PCV) valve

Materials needed

arrows pointing to pcv valve in valve cover and hose going to intake manifold

Step 1: Locate the positive crankcase ventilation (PCV) valve. Look over the valve cover on the engine. The PCV valve will typically resemble the one pictured above, and have a hose that goes from the PCV valve up to the intake assembly or the throttle body.

thread type pcv valve with a wrench

Step 2: Remove the PCV valve. The is most often accomplished by pulling the PCV valve from the valve cover by hand and then pulling the hose off.

Some will be threaded into the valve cover and you will need to remove the hose before unscrewing the PCV valve to remove it.

Step 3: Compare the replacement PCV valve to the one you removed. They will need to be the same type, same dimensions, and have the same type of hose connection.

You should hear a rattle when you shake the replacement PCV valve. This is because there is a check-ball inside the valve that should be able to move somewhat freely.

Step 4: Install the replacement PCV valve. You should be able to just reverse the removal procedure.

Either place the PCV hose back on and push the replacement back into the valve cover, or thread the replacement into the valve cover, and then reinstall the hose.

The positive crankcase ventilation (PCV) valve directs the pressure created by combustion from the engine’s crankcase back into the intake manifold, or intake tract, via hose or tube. This is an essential function that will cause your engine’s performance to suffer greatly if it is not functioning correctly/

If at any point you feel you could use a hand with replacing a PCV valve in your vehicle, contact a professional technician, such as those available at YourMechanic. YourMechanic has trained and certified repair professionals that can come to your home or place of business and perform the repairs for you.


Schedule Positive Crankcase Ventilation (PCV) Valve Replacement
Service Area

$82.70 - $485.95

Price range for all vehicles
Average rating from 215 customers who received a Positive Crankcase Ventilation (PCV) Valve Replacement.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Excellent Auto Repair Ratings.

4.2 Average Rating

Auto Repair

Service Hours

7 AM - 9 PM

7 days a week

Phone Number

Phone Hours

Mon - Fri / 6 AM - 5 PM PST

Sat - Sun / 7 AM - 4 PM PST

Address

We come to you at no extra charge

Guarantee

12-month/12,000-mile warranty

Service Area

Recent Positive Crankcase Ventilation (PCV) Valve Replacement reviews

Excellent Rating


YourMechanic Positive Crankcase Ventilation (PCV) Valve Replacement Service

Average Rating

4.8/5

Number of Reviews

215

Rating Summary
198
8
1
0
8
198
8
1
0
8

Attila

18 years of experience
622 reviews
Attila
18 years of experience
Mercedes-Benz E320 - Positive Crankcase Ventilation (PCV) Valve - East Orange, New Jersey
Attila arrived on time and completed the work in a most timely manner. He was professional, courteous and very knowledgeable. If I need service again, I would like to have him perform any that are needed. Thanks!
Hyundai Elantra - Positive Crankcase Ventilation (PCV) Valve - Wayne, New Jersey
He will let you know, exactly what is wrong with your car, and the best ways to go about fixing it or what to do from there.

Kyle

11 years of experience
52 reviews
Kyle
11 years of experience
Volvo S70 - Positive Crankcase Ventilation (PCV) Valve - Las Vegas, Nevada
Dude was very on point and thorough with the job, courteous and informative. I definitely recommend him and request him again. Thanks Kyle!

Gabriel

12 years of experience
24 reviews
Gabriel
12 years of experience
BMW X3 - Positive Crankcase Ventilation (PCV) Valve Replacement - Colorado Springs, Colorado
Gabriel was friendly and professional. I will definitely tell my friends. He also had an honest air about him. Really appreciate him.

Xavier

10 years of experience
29 reviews
Xavier
10 years of experience
Honda Pilot - Positive Crankcase Ventilation (PCV) Valve - McKinney, Texas
Xavier arrived just before the appointment. He completed the complimentary inspection and repair within the allotted time. After the inspection he found some things that needed to be done. However, he explained that not all of them are urgent and can wait as long as I keep a close watch such as oil on the ground. There is no hard-sell on additional services. He even told me how easy it is to do one of the recommended repairs if I wanted to do it myself. Will definitely call on him again for future repairs.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE