Kia Optima: Emission Control System
Kia Optima DL3 2019-2024 Service and Repair Manual / Emission Control System
Service data
| Specifications |
Purge Control Solenoid Valve (PCSV)
▷ Specification
|
Item |
Specification |
|
Coil Resistance (Ω) |
22.0 - 26.0 [20°C (68°F)] |
Tightening torque
| Tightening Torques |
|
Item |
kgf.m |
N.m |
lb-ft |
|
Positive Crankcase Ventilation (PCV) Valve |
0.2 - 0.3 |
1.96 - 2.94 |
1.45 - 2.17 |
Description and operation
| Description |
Emissions Control System consists of three major systems.
| • |
Crankcase Emission Control System prevents blow-by gas from releasing into the atmosphere. This system recycles gas back into the intake manifold (Closed Crankcase Ventilation Type). |
| • |
Evaporative Emission Control System prevents evaporative gas from releasing into the atmosphere. This system burns gas at appropriate engine operating condition after gathering it in the canister. |
| • |
Exhaust Emission Control System converts the three pollutants [hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx)] into harmless substances by using the 3-way catalytic converter. |
Troubleshooting
| Troubleshooting |
|
Symptom |
Suspect Area |
|
Engine will not start or stuggle to start |
Vapor hose damaged or disconnected |
|
Engine stuggle to start |
Malfunction of the Purge Control Solenoid Valve |
|
Rough idle or engine stalls |
Vapor hose damaged or disconnected |
|
Malfunction of the PCV valve |
|
|
Rough idle |
Malfunction of the Evaporative Emission Control System |
|
Excessive oil consumption |
Positive crankcase ventilation line clogged |
Schematic diagrams
| Schematic Diagram |
Components and components location
| Components Location |
| 1. PCV valve 2. Canister 3. Purge control solenoid valve (PCSV) 4. Fuel Tank Air Filter 5. Catalytic converter (WCC) |
6. Catalytic converter (UCC)
7. Leveling Tube 8. Vapor Hose (Canister ↔ Fuel Tank) 9. Ventilation Hose (Canister ↔ Atmosphere) |
|
1. PCV valve |
2. Canister |
|
|
|
|
3. Purge control solenoid valve (PCSV) |
4. Fuel Tank Air Filter |
|
|
|
|
5. Catalytic converter (WCC) |
6. Catalytic converter (UCC) |
|
|
|
|
7. Leveling Tube 8. Vapor Hose (Canister ↔ Fuel Tank) 9. Ventilation Hose (Canister ↔ Atmosphere) |
|
|
|
|
Starter Relay
Repair procedures
Inspection
1.
Disconnect the negative battery (-) terminal.
2.
Remove the fuse box cover.
3.
Remove t ...
Crankcase Emission Control System
Schematic diagrams
Schematic Diagram
Repair procedures
Inspection
1.
After disconnecting the vapor hose from the PCV valve, remove the PCV
valve.
...
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