Kia Niro: Crankcase Emission Control System / 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 in vacuum.

4.

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

Schematic diagrams
Schematic Diagram ...

Positive Crankcase Ventilation (PCV) Valve Description and operation
Operation Principle ...

Other information:

Kia Niro (DE HEV) Owners Manual: Driving your vehicle
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Kia Niro (DE HEV) Owners Manual: Turn signals when towing a trailer
When you tow a trailer, your vehicle has to have a different turn signal flasher and extra wiring. The green arrows on your instrument panel will flash whenever you signal a turn or lane change. Properly connected, the trailer lights will also flash to alert other drivers you’re about to tur ...

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