Hyundai Santa Fe (TM): Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve. Description and operation

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Emission Control System / Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve. Description and operation

Description
Pressure Regulating Valve (PRV) is installed to prevent the over pressure of combustion gas through the piston ring and onto the crankcase.

Operation Principle
Engine Condition
Stop
Idle or Deceleration
Normal operating condition
Accelerating in the high load area
Intake manifold pressure
 0
 High
 Appropriate
 Low
PRV (Diaphragm)
 Full open
 A little open
 Appropriate open
 Considerable open
Amount of blow-by gas
 0
 A little
 Middle
 A lot
Diaphragm component part


    Schematic Diagram 1. PCV Valve 2. Breather hose 3. Air intake hose 4. Intake maifold 5. Air breather hose 6.

    Removal 1. Remove the cylinder head cover. (Refer to Engine Mechanical System - "Cylinder Head Cover") Installation 1.

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