Prelude L4-2157cc 2.2L DOHC (VTEC) MFI (2001)
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Positive Crankcase Ventilation: Description and Operation
The Positive Crankcase Ventilation (PCV) system is designed to prevent blow-by gas from escaping to the atmosphere.
The PCV valve contains a spring-loaded plunger. When the engine starts, the plunger in the PCV valve is lifted in proportion to intake manifold vacuum
and the blow-by gas is drawn directly into the intake manifold.
