Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How Long Does a Crankcase Vent Filter Last?

How Long Does a Crankcase Vent Filter Last?

crankcase vent filter

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

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

More related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...

Related questions

Q: I have checked the oil level and the oil level on the dipstick is far over 'maximum'. Should I carry out a full service?

You should find out the reason the oil is overfull. If the oil is contaminated with water then you may have a head gasket blown. If the oil is contaminated with fuel then you may have a fuel injection system...

Q: Q: Won't crank.

Depending on if you overheated the engine and it still has the cracked radiator, then you may have more than one problem. You may have a problem with the crankshaft sensor if you are not getting spark. You said you...

Q: I have a stutter at idle

I would recommend checking the mass air flow sensor. As you know this also contributes to the regulation of air flow into the throttle body. If this does not have the proper voltage going to it, this may also cause...