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

Hyundai Santa Fe (TM) 2019-2025 Service 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 diagrams

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

Positive Crankcase Ventilation (PCV) Valve. Repair procedures

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

Other information:

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: System settings

Setting functions for the system Turning the system ON/OFF With the engine on, shortly press the Lane Driving Assist button located on the steering wheel to turn on Lane Following Assist. The white or green indicator light will illuminate on the cluster...

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: Starting the engine

WARNING Always wear appropriate shoes when operating your vehicle. Unsuitable shoes, such as high heels, ski boots, sandals, flipflops, etc., may interfere with your ability to use the brake and accelerator pedals. Do not start the vehicle with the accelerator pedal depressed...