How Long Does a PCV Filter Last?

The Positive Crankcase Ventilation, also known as a PCV valve, helps relieve some of the excess pressure produced in your vehicle's crankcase. Using a filtered air flow, the PCV system draws fumes and vapors from the crankcase and reroutes them via the intake manifold, burning them within the engine's combustion chambers.

A side effect of this is the production of a vacuum, which in turn helps reduce oil leaks, thus cutting down on engine oil loss and letting the oil do a better job of lubricating and protecting your vehicle's engine. To find the PCV filter, look for the intake manifold. The PCV valve connects the crankcase and the intake manifold. Check your vehicle's owner's manual for the exact location of the PCV valve in your make and model of vehicle.

When should you change out the PCV filter on your vehicle?

Most manufacturers recommend that vehicle owners replace the PCV filter at least every 60,000 miles. While not a hard-and-fast rule, having a mechanic check the performance of the PVC system every two years can help ensure that it is working properly.

A mechanic can check the performance of the PVC system by noting the change in idle speed of your vehicle by restricting the flow of oxygen to the PVC valve. Talk to a mechanic to determine the best PVC filter when looking for a replacement for your vehicle.

Symptoms of a faulty PVC filter

A PVC filter helps keep your engine running properly by helping to move sludge-building fumes and vapors from the crankcase to the engine combustion chambers for easy disposal. The following symptoms let you know when you need to replace the PVC filter in your vehicle:

  • The breather element has become contaminated. The breather element helps filter the air drawn into your vehicle's crankcase by the PCV system. Made of paper or foam, the breather element sits within the air filter housing.

  • Increased oil consumption represents another sign that the PCV valve might have gone bad. A decrease in engine performance, such as engine stalling, is also an indicator of a faulty PVC valve.


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

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 to Troubleshoot and Replace a Leaking Valve Cover Gasket
Valve cover gasket leaks usually start when not much oil leaves the engine. It should be repaired before it causes serious damage and costly repairs.
How to Replace an Exhaust Gas Recirculation (EGR) Valve
The exhaust gas recirculation (EGR) valve can cause drivability problems if it fails and should be replaced to avoid engine performance issues.
How to Replace an Air Conditioning Expansion Valve (Orifice Tube)
Car air conditioning systems need the expansion valve, or orifice tube, replaced if the AC is blowing warm air or the AC system is broken.

Related questions

Cooling system issue - 1999 Chevrolet C3500
The lower intake manifold gasket you replaced seals both coolant, and oil passages. It is possible that coolant (under higher pressure) is leaking into an oil passage. It is also possible you have a bad head gasket - leaking coolant...
Can I remove with EPC solenoid and wiring harness without removing the valve body?
The solenoid may be removed without removing the valve body, however, the valve body will need to be removed in order to get the harness out safely without damaging it. There are two bolts that hold the solenoid in as...
Signals from my purge valve sensor are intermittent says the diagnosis.
Hi and thanks for contacting YourMechanic. There could be a vacuum leak at the purge valve or around the purge valve. Look to see if the gas cap closed properly, there is no cracks or other damage on the charcoal...

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