Kia Optima: Emission Control System / Evaporative Emission Control System
Description and operation
| Description |
Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere. When the fuel evaporates in the fuel tank, the vapor passes through vent hoses or tubes to canister filled with charcoal. The canister temporarily holds the vapor in the charcoal. If ECM determines to draw the gathered vapor into the combustion chambers during certain operating conditions, it will vacuum into intake manifold.
Schematic diagrams
| Schematic Diagram |
| 1. Air cleaner 2. Delivery pipe & injector 3. Engine 4. Purge control solenoid valve (PCSV) 5. Fuel tank air filter |
6. Fuel pump 7. Fuel filler neck 8. Fuel filler cap 9. Fuel tank |
Canister
Canister is filled with charcoal and absorbs evaporated vapor in fuel tank. The gathered fuel vapor in canister is drawn into the intake manifold by the ECM/PCM when appropriate conditions are set.
Purge Control Solenoid Valve (PCSV)
Purge Control Solenoid Valve (PCSV) is installed in the passage connecting canister and intake manifold. It is a duty type solenoid valve and is operated by ECM/PCM signal.
To draw the absorbed vapor into the intake manifold, the ECM/PCM will open the PCSV, otherwise the passage remains closed.
Fuel Filler Cap
A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which would seal the fuel filler. After the gasket on the fuel filler cap and the fill neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set.
Positive Crankcase Ventilation (PCV) Valve
Description and operation
Operation Principle
Repair procedures
Removal
1.
Disconnect the vapor hose (A).
2.
Remove the PCV val ...
Canister
Repair procedures
Removal
1.
Disconnect the negative (-) battery cable.
2.
Remove the stabilizer bar bushing (A).
Tightening ...
Other information:
Kia Optima DL3 2019-2023 Owner's Manual: Cup holder
WARNING - Hot liquids Do not place uncovered cups with hot liquid in the cup holder while the vehicle is in motion. If the hot liquid spills, you may burn yourself. Such a burn to the driver could lead to loss of control of the vehicle. CAUTION Keep your drinks sealed while driving to prevent ...
Kia Optima DL3 2019-2023 Owner's Manual: Temperature control
The temperature will increase to the maximum (HI) by turning the knob to the extreme right. The temperature will decrease to the minimum (Lo) by turning the knob to the extreme left. When turning the knob, the temperature will increase or decrease by 0.5°C/1°F. When set to the lowest tem ...
