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:

    General Service Information
    Protection Of The Vehicle Always be sure to cover fenders, seats, and floor areas before starting work. The support rod ...

    Canister Close Valve (CCV). Schematic Diagrams
    Circuit Diagram ...

    Impact sensing door unlock system (if equipped)
    All doors will be automatically unlocked when the impact is delivered to impact sensors while the ignition switch is ON. However, the doors may not be unlocked if mechanical problems occur with th ...