What is a PCV valve on a Honda Civic?

What is a pcv valve? The positive crankcase ventilation (PCV) valve and hose connect the engine crankcase, where the crankshaft is installed, to the intake manifold, allowing the lower half of the engine to release gases and pressure when the engine is operating. via

What does Honda PCV valve do?

Essentially, a PCV valve controls emissions — it takes the gases produced by the crankcase and routes them back into your engine's combustion chambers to be safely burned without harming your vehicle or the environment. via

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