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 2017 (DE HEV) Service Manual: Drive Shafts and Boots Repair procedures
Inspection 1. Check the drive shaft boots for loose clamps, cracks, grease leaks, kinks or damage. ...

Kia Niro (DE HEV) Owners Manual: Inverter coolant
Check the condition and connections of all cooling system hoses and heater hoses. Replace any swollen or deteriorated hoses. The coolant level should be filled between MAX and MIN marks on the side of the coolant reservoir when the engine is cool. If the coolant level is low, add enough spec ...

© 2016-2026 www.kniro.net