Operation Principle

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Engine Condition	Not Running	Idling or Decelerating	Normal Operation	Accelerating and High Load
Vacuum in Intake Manifold	0	High	Moderate	Low
PCV Valve	Close	Slightly Open	Properly Open	Fully Open
Blow-by Gas Flow	0	Small	Medium	Large
Schematic Diagram	Courtesy of HYUNDAI MOTOR AMERICA	Courtesy of HYUNDAI MOTOR AMERICA	Courtesy of HYUNDAI MOTOR AMERICA	Courtesy of HYUNDAI MOTOR AMERICA