Hyundai Sonata: Repair procedures - Crankcase Emission Control System - Emission Control SystemHyundai Sonata: Repair procedures

Inspection

1.
After disconnecting the vapor hose from the PCV valve, remove the PCV valve.
2.
Reconnect the PCV valve to the vapor hose.
3.
Run the engine at idle, then put a finger over the open end of the PCV valve and make sure that intake manifold vacuum can be felt.
The plunger inside the PCV valve will move back and forth at vacuum.

4.
If the vacuum is not felt inspect PCV operation, if operating correctly clean or replace the vapor hose.

    Schematic Diagrams
    Schematic Diagram ...

    See also:

    Normal maintenance schedule
    The following maintenance services must be performed to ensure good emission control and performance. Keep receipts for all vehicle emission services to protect your warranty. Where both mileage a ...

    Daytime running light
    Daytime Running Lights (DRL) can make it easier for others to see the front of your vehicle during the day. DRL can be helpful in many different driving conditions, and it is especially helpful af ...

    CVVT Oil Control Valve (OCV). Schematic Diagrams
    Circuit Diagram ...