Hyundai Tucson Owners & Service Manuals

Hyundai Tucson: Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve

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

- Operating Principle
Engine conditionStopIdle or DecelerationNormal operating conditionAccelerating in the high load area
Intake manifold pressure0HighAppropriateLow
PRV (Diaphragm)Full openA little openAppropriate openConsiderable open
Amount of blow-by gas0A littleMiddleA lot
Diaphragm component part


- Removal

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

- Installation

1.Install in the reverse order of removal.

    Description and Operation
    - Description A : Crankcase pressure regulating valve (PRV)B : Breather hoseC : Intake hoseD : Air flowE : Intake manifoldF : Cylinder block ① Blow-by gas flow② Blow-by gas inflow to the c ...

    Crankcase Check Valve
    - Removal and Installation     • Be careful not to damage the parts located under the vehicle (floor under cover, canister, fuel tank) when raising the vehicle using the lift. ...

    Other information:

    Hyundai Tucson (NX4) 2022-2025 Service Manual: Seat Belt Pretensioner (BPT)
    - Description The Seat Belt Pretensioners (BPT) are installed inside Center Pillar (LH & RH). When a vehicle crashes with a certain degree of frontal impact, the pretensioner seat belt helps to reduce the severity of injury to the front seat occupants by retracting the seat belt webbing ...

    Hyundai Tucson (NX4) 2022-2025 Service Manual: Components and Components Location
    - Components Location 1. Supplemental Restraint System Control Module (SRSCM)2. Gravity Side Impact Sensor (G-SIS) _ C pillar3. Gravity Side Impact Sensor (G-SIS) _ B pillar4. Front Impact Sensor (FIS) [RH]5. Front Impact Sensor (FIS) [LH]6. Pressure Side Impact Sensor (P-SIS) ...

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