Emission Control System
The emission control system of your vehicle is covered by a written limited warranty. Please refer to the warranty information contained in the Warranty Information and Consumer Information booklet in your vehicle.
Your vehicle is equipped with an emission control system that meets all applicable emission standards.
There are the following three emission control systems.
(1) Crankcase Emission Control System
(2) Evaporative Emission Control System
(3) Exhaust Emission Control System
To ensure proper operation of the emission control systems, it is recommended that your vehicle be inspected and serviced by an authorized Kia dealer according to the maintenance schedule in this manual.
Precautions for Inspection and Maintenance (with Electronic Stability Control (ESC) System)
- To prevent the vehicle from misfiring during dynamometer testing, turn off the Electronic Stability Control (ESC) system by pressing the ESC switch.
- After completing the dynamometer test, turn the ESC system back on by pressing the ESC switch again.
1. Crankcase Emission Control System
The Positive Crankcase Ventilation (PCV) system is used to prevent air pollution caused by crankcase gases escaping into the atmosphere. This system supplies fresh filtered air to the crankcase through the air intake hose. Inside the crankcase, fresh air mixes with the crankcase gases, which then pass through the PCV valve into the intake system.
2. Evaporative Emission Control System (including ORVR: Onboard Refueling Vapor Recovery)
The evaporative emission control system is designed to prevent fuel vapors from escaping into the atmosphere.
(The ORVR system is designed to route vapors from the fuel tank to the canister during refueling at a gas station, preventing fuel vapors from escaping into the atmosphere).
Canister
Fuel vapor generated inside the fuel tank is absorbed and stored in the onboard canister. When the engine is running, the fuel vapor absorbed by the canister is drawn into the intake manifold through the Purge Control Solenoid Valve (PCSV).
Purge Control Solenoid Valve (PCSV)
The Purge Control Solenoid Valve is controlled by the Engine Control Module (ECM). When the engine coolant temperature is low at idle, the PCSV closes so that evaporated fuel does not enter the engine. After the engine warms up during normal driving, the PCSV opens to supply evaporated fuel to the engine.
3. Exhaust Emission Control System
The exhaust emission control system is a highly effective system that controls exhaust emissions while maintaining good vehicle performance.
Engine Exhaust Precautions (Carbon Monoxide)
• Carbon monoxide may be present in other exhaust gases. Therefore, if you smell exhaust fumes of any kind inside your vehicle, have the vehicle checked and repaired immediately. If you suspect exhaust gases are entering your vehicle, drive only with all windows fully open. Have the vehicle checked and repaired immediately.
WARNING - Exhaust
Engine exhaust contains carbon monoxide (CO). Although colorless and odorless, it is dangerous and can be fatal if inhaled. Follow the instructions on this page to avoid carbon monoxide poisoning.
- Do not operate the engine in enclosed or confined areas (such as garages) any longer than necessary to enter or exit the area.
- When the vehicle is stopped in an open area for more than a short time with the engine running, adjust the ventilation system (if necessary) to draw outside air into the vehicle.
- Never sit in a parked or stopped vehicle for a long period with the engine running.
- When the engine stalls or fails to start, excessive attempts to restart the engine may cause damage to the emission control system.
Precautions for Operating Catalytic Converters (if equipped)
WARNING - Catalytic Converter
Keep away from the catalytic converter and exhaust system while the vehicle is running or immediately after it has been running. The exhaust and catalytic converter systems become very hot and may burn you.
WARNING! Fire
- Do not park, stop, or drive the vehicle over or near flammable materials such as grass, vegetation, paper, leaves, etc. The hot exhaust system may ignite flammable materials under the vehicle.
- Also, do not place flammable materials around the exhaust system, do not undercoat the vehicle, or apply anti-corrosion coating to the vehicle. Under certain conditions, this may create a fire hazard.
Your vehicle is equipped with a catalytic converter.
Therefore, observe the following precautions:
- Use only UNLEADED FUEL for gasoline engines.
- Do not drive the vehicle if you notice signs of engine malfunction, such as misfiring or a noticeable loss of performance.
- Do not misuse or abuse the engine. Examples of misuse include coasting with the ignition switched off and descending steep hills in gear with the ignition switched off.
- Do not run the engine at high idle speed for a long time (5 minutes or more).
- Do not modify or tamper with any part of the engine or emission control system. All inspections and adjustments must be performed by an authorized Kia dealer.
- Avoid driving with very low fuel. Running out of fuel may cause engine misfires and damage to the catalytic converter.
Failure to observe these precautions may cause damage to the catalytic converter and to your vehicle. In addition, such actions may void your warranties.
Test yourself
A quick Kia Rio YB quiz: every answer comes with an explanation and a link to the manual page.