Kia Rio: Emission Control System

Kia Rio 2017-2021 YB Service Manual / Emission Control System

Specifications
Specifications

Purge control solenoid valve (PCSV)

▷ Specification

Item
Specification
Coil resistance (Ω)
18.5 - 22.5 [23°C(73.40°F)]

Tightening Torques

Item
kgf·m
N·m
lb·ft
Positive Crankcase Ventilation (PCS) Valve
0.19 - 0.29
1.89 - 2.84
1.40 - 2.09
Purge Control Solenoid Valve (PCSV) bracket mounting bolt
1.0 - 1.2
9.8 - 11.8
7.2 - 8.7

Components and components location
Components Location

1. PCV valve
2. Canister
3. Purge control solenoid valve (PCSV)
4. Catalytic converter (WCC)
5. Catalytic converter (UCC)
6. Leveling Hose
7. Vapor Tube (Canister ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Air Filter)
10. Ventilation Hose (Air Filter ↔ Atmosphere)

1. PCV valve
2. Canister

3. Purge Control Solenoid Valve (PCSV)
4. Catalytic Converter (WCC)

5. Catalytic Converter (UCC)

6. Leveling Hose
7. Vapor Tube ( Canister ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Air Filter)
10. Ventilation Hose (Air Filter ↔ Atmosphere)


Description and operation
Description

Emissions control system consists of the three major systems.

Crankcase emission control system prevents blow-by gas from going into the atmosphere. This system burns these gases after moving them to the intake manifold (Closed Crankcase Ventilation Type).

Evaporative emission control system prevents evaporative gas going into the atmosphere. This system burns the gases 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.

Schematic diagrams
Schematic Diagram

Troubleshooting
Troubleshooting

Symptom
Suspect area
Engine will not start or hard to start
Vapor hose damaged or disconnected
Engine hard 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

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