Kia Optima DL3 Quiz
Emission Control System

Crankcase Emission Control System

In this manual: Emission Control System
General Information — 8Advanced Driver Assistance System (ADAS) — 21Maintenance — 27Engine Mechanical System — 45Engine Electrical System — 11Emission Control System — 11Engine Control System/Fuel System — 25Automatic Transmission — 20Drive Shaft and Axle — 7Suspension System — 22Steering — 7Restraints — 11Brake System — 22Body (Interior and Exterior) — 116Body Electrical System — 90Heating, Ventilation, and Air Conditioning — 32
4steps
~24min
2/5difficulty
Done 0 of 4

Circuit Diagrams

Schematic Diagram

Repair Procedures

Inspection

  1. Disconnect the vapor hose from the PCV valve, then remove the PCV valve.

  2. Reconnect the PCV valve to the vapor hose.

  3. Inspect the PCV valve operation.

    1. Start the engine and allow it to idle.

    2. Place your finger over the open end of the PCV valve.

    3. Make sure that vacuum is felt at the intake manifold.

  4. If no vacuum is felt, clean or replace the vapor hose.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.