Hyundai Santa Cruz Owners & Service Manuals

Hyundai Santa Cruz: 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.

- Operation 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.

    Schematic Diagrams
    - Schematic Diagram 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 ...

    Crankcase Check Valve
    - Removal and Installation 1.Disconnect the battery (-) terminal. 2.Remove the engine room under cover.(Refer to Engine And Transaxle Assembly - "Engine Room Under Cover") 3.Remove the drive be ...

    Other information:

    Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Troubleshooting
    - Troubleshooting Engine misfire with abnormal internal lower engine noises. Probable CauseRemedy Worn bearings due to shortage orexcessive oilReplace the crankshaft and bearings as required. Improperly installed flywheelRepair or replace the flywheel as required. Worn piston rings.(Oil consu ...

    Hyundai Santa Cruz 2021-2025 Owners Manual: Power Windows
    The ignition switch must be in the ON position to be able to raise or lower the windows. Each door has a Power Window switch to control that door’s window. The driver has a Power Window Lock switch which can block the operation of passenger windows. The power windows will operate for about ...

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