Emission Control System
Components and Component Location
Component Location
| 1. PCV Valve 2. Canister 3. Purge Control Solenoid Valve (PCSV) 4. Fuel Tank Air Filter |
5. Catalytic Converter (TWC) 6. Vapor Hose (Canister ↔ Intake Manifold) 7. Vapor Hose (Canister ↔ Fuel Tank) 8. Vent Hose (Canister ↔ Atmosphere) |
| 1. PCV Valve | 2. Canister 4. Fuel Tank Air Filter |
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| 3. Purge Control Solenoid Valve (PCSV) | 5. Catalytic Converter (TWC) |
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| 6. Vapor Hose (Canister ↔ Intake Manifold) 7. Vapor Hose (Canister ↔ Fuel Tank) 8. Vent Hose (Canister ↔ Atmosphere) |
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Description and Operation
Description
The emission control system consists of three main systems.
The Positive Crankcase Ventilation (PCV) system prevents crankcase emissions from being released into the atmosphere. This system recirculates the gas back into the intake manifold (closed-type crankcase ventilation).
The Evaporative Emission Control System prevents evaporated fuel vapors from being released into the atmosphere. After collection in the canister, the system burns the gas during proper engine operating conditions.
The exhaust emission control system converts the three pollutants [hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx)] into harmless substances using the three-way catalytic converter.
Circuit Diagrams
Schematic Diagram
Troubleshooting
Troubleshooting
| Symptom | Suspected Area |
| Engine Does Not Start or Is Difficult to Start | Vapor hose damaged or disconnected |
| Engine Hard to Start | Faulty Purge Control Solenoid Valve |
| Rough idle or engine stalls | Vapor hose damaged or disconnected |
| Faulty PCV Valve | |
| Rough idle | Faulty Evaporative Emission Control System |
| Excessive Oil Consumption | PCV hose clogged |
Test yourself
A quick Kia Stinger CK quiz: every answer comes with an explanation and a link to the manual page.