How Long Does a Crankcase Vent Filter Last?

The crankcase vent filter is connected to a breather tube that connects the crankcase and then has access outside to clean air. The clean air then flows back in through the crankcase vent filter and into the engine to cycle through once again. Once the air is inside the engine, the air circulates and clears away combustion byproducts such as water vapor or dissolved chemical combustion byproducts. This provides you with less emissions and a more environmentally friendly vehicle than if there were no positive crankcase ventilation.

The crankcase vent filter is part of the positive crankcase ventilation (PCV) system. All parts of the PCV should be kept open and clean to keep air flowing smoothly so your vehicle will work at its optimal condition. If the system or crankcase vent filter becomes clogged or damaged, the engine will eventually become damaged as well. This means you go from a relatively straightforward repair to a much more extensive one that includes repairing your engine.

The biggest problems with PCV systems and the crankcase vent filter arise when they are not properly maintained. When that happens, the vehicle can have poor performance and the car will have many other issues that you will start to notice as well. To keep the crankcase vent filter in good working condition, it should be changed every time you replace your spark plugs. If this is not done, oil sludge will build up in your filter and cause serious problems and damage your engine. If it has been a while since you have inspected your crankcase vent filter, have a professional mechanic take a look at it so it can be replaced if necessary.

The PCV valve can last longer if it is maintained on a regular basis even though it works in a harsh environment and is continuously subjected to oil droplets from the airflow which makes it more prone to failure. Furthermore, it is located in a hot environment which can also wear down the parts. Since the crankcase vent filter can become worn or damaged over time, it is important to know the symptoms that indicate the part needs to be replaced.

Signs your crankcase vent filter needs to be replaced include:

  • Your engine is smoking or consuming oil
  • You hear a wheezing sound from the engine
  • Poor fuel economy
  • Decrease in vehicle performance

If you experience any of these problems with your car, you can have the problem inspected and repaired by a mechanic to prevent any further problems with your car.


Next Step

Schedule Crankcase Vent Filter Replacement

The most popular service booked by readers of this article is Crankcase Vent Filter Replacement. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

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

Recent Crankcase Vent Filter Replacement reviews

Excellent Rating

(171,627)

Rating Summary
161,099
5,644
1,174
834
2,876
161,099
5,644
1,174
834
2,876

Gustavo

17 years of experience
400 reviews
Gustavo
17 years of experience
Ford F-150 V6-4.2L - Oil Change - San Antonio, Texas
Gustavo is always on time, happy, thorough, expeditious, and so competent. I won’t have anyone else take care of my vehicles. Highly recommend Gustavo and his company.
Kia Soul - Automatic Transmission Fluid Service - San Antonio, Texas
Excellent job as always!

Eliseo

12 years of experience
239 reviews
Eliseo
12 years of experience
Dodge Ram 2500 L6-5.9L Turbo Diesel - Crankcase Vent Filter - New Caney, Texas
Great very informative an fast.

Joshua

27 years of experience
709 reviews
Joshua
27 years of experience
Dodge Ram 2500 L6-6.7L Turbo Diesel - Crankcase Vent Filter - Vacaville, California
This is the second time Josh has worked on one of our cars. Josh is a very knowledgable and professional mechanic. He was on time and very thorough with fixing the problem we had with our truck.

Chris

22 years of experience
2223 reviews
Chris
22 years of experience
Audi A4 L4-1.8L Turbo - Crankcase Vent Filter - Santa Ana, California
Early, professional, and extremely knowledgeable. The best mechanic I've encountered!

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

Related articles

How Long Does an Air Pump Filter Last?
In In any vehicle that has an emissions system, otherwise known as a smog control system, it is vital that the air that enters the system is free of contaminants and debris. This is because the air is recirculated along...
How to Replace Your Air Filter
Before Before it can enter the engine, the engine air filter traps any dust and debris by acting as a shield, blocking its path. Over time, however, these filters can accumulate a lot of dirt and get clogged up (https://www.yourmechanic.com/services/air-filter-is-clogged-inspection),...
5 Commonly Overlooked Vehicle Maintenance Items
Brake fluid, auto transmission fluid, and coolant flushes, as well as cabin filter changes and valve adjustments, are all important services.

Related questions

Cabin air filters on a 2010 Altima
Most of them actually do come with some kind of the tray. Maybe yours is lost and you need to get another one. But they do generally have arrows this side up or air flow downwards that show you which...
After driving awhile, when idling, RPM drops below 500 & car stalls. Happens rarely but RPM fluctuates, and drops suddenly.
If you are having a stalling problem (https://www.yourmechanic.com/article/how-to-fix-a-stalling-car) then you may have a computer code stored in memory. I suggest having the computer scanned to see if there is any codes stored and diagnose them as needed. The intake hose...
Can dirty filters cause the truck not to get enough power to pick up speed?
Hi and thanks for contacting YourMechanic. Dirty oil can cause problems with the engine, but not in two weeks unless you are driving long distances on the highways. Adding oil will actually aid the oil, so no worries until you...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com