Kia Optima: Emission Control System
Kia Optima DL3 2019-2023 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.
...
Other information:
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Kia Optima DL3 2019-2023 Service and Repair Manual: Engine Control System
Description and operation Description If the Gasoline Engine Control system components (sensors, ECM, injector, etc.) fail, interruption to the fuel supply or failure to supply the proper amount of fuel for various engine operating conditions will result. The following situations ...
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