The PCV Valve is part of the engine air filtration system, if equipped on your vehicle. This system aids in filtering the air's contaminants and helps to ensure the correct air/fuel mixture.
The Engine Air Filtration System may consist of the following components:
- Engine Air Filter
- Breather Element, if equipped
- PCV Valve, if equipped
The Engine Air Filter reduces harmful dirt particles from entering the engine's air intake system where they may cause engine damage.
The Breather Element helps filter the air pulled into the engine crankcase by the Positive Crankcase Ventilation (PCV) system or a metered orifice.
The PCV Valve or metered orifice regulates the flow of crankcase fumes into the intake manifold so they can be burned and help maintain proper cankcase pressure.
As engine air filtration components become restricted, airflow is reduced, which could lead to poor acceleration, reduced engine performance, reduced fuel economy, oil leaks as well as other issues.