Kia Rio: 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 the canister filled with charcoal and 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 use vacuum in intake manifold to move it.
Schematic diagrams
| Schematic Diagram |
| 1. Air cleaner 2. Delivery pipe & injector 3. Engine 4. Purge control solenoid valve (PCSV) |
5. Fuel pump 6. Fuel filler neck 7. Fuel filler cap 8. 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) and then remove the PCV valve (B).
...
Canister
Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-)
terminal.
2.
Remove the fuel tank assembly.
...
Other information:
Kia Rio 2017-2024 YB Owners Manual: USB charger
The USB charger is designed to recharge batteries of small size electrical devices using a USB cable.The electrical devices can be recharged when the Engine Start/Stop button is in ACC/ON/START position. The battery charging state may be monitored on the electrical device. Disconnect the USB ...
Kia Rio 2017-2024 YB Owners Manual: Manual climate control system
To defog inside windshield 1. Select any fan speed except "0" position. 2. Select desired temperature. 3. Select the or position. 4. The outside (fresh) air will be selected automatically. If the outside (fresh) air position is not selected automatically, press the corresponding button m ...
