FixVault

Emission: PCV System: Overview

To reduce HC emissions, crankcase blow-by gas (HC) is routed through the PCV valve to the intake manifold for combustion in the cylinders.

Fig 1: Overview Of Entire PCV System
G50G14502Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Operation Of PCV Valve Under Different Circumstances
G50H14503Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002