Kia Rio YB Quiz

Emission Control System

In this manual: Emission Control System
General Information — 8Maintenance — 31Engine Mechanical System — 44Engine Electrical System — 14Emission Control System — 9Engine Control System/Fuel System — 30Clutch System — 10Manual Transmission — 10Automatic Transmission — 23Drive Shaft and Axle — 8Suspension System — 15Steering — 9Restraints — 14Brake System — 22Body (Interior and Exterior) — 115Body Electrical System — 84Heating, Ventilation, and Air Conditioning — 28
~2min read

Specifications

Specifications

Purge Control Solenoid Valve (PCSV)

▷ Specifications

Item Specification
Coil Resistance (Ω) 18,5–22,5 [23 °C]

Tightening torque

Item kgf·m N·m lbf·ft
Positive Crankcase Ventilation (PCV) 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 Component Location

Component Location

1. PCV Valve
2. Canister
3. Purge Control Solenoid Valve (PCSV)
4. Catalytic Converter (TWC)
5. Catalytic Converter (UCC)		 6. Balance Hose
7. Vapor Tube (Reservoir ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Air Cleaner)
10. Ventilation Hose (Air Cleaner ↔ Atmosphere)

1. PCV Valve 2. Canister
3. Purge Control Solenoid Valve (PCSV) 4. Catalytic converter (WCC)
5. Catalytic converter (UCC)
6. Balance Hose
7. Vapor Tube (Reservoir ↔ Intake Manifold)
8. Vapor Hose (Canister ↔ Fuel Tank)
9. Ventilation Hose (Canister ↔ Air Cleaner)
10. Ventilation Hose (Air Cleaner ↔ Atmosphere)

Description and Operation

Description

The emission control system consists of three main systems.

  • The Crankcase Emission Control System prevents crankcase gases from being released into the atmosphere. This system burns these gases after routing them to the intake manifold (closed crankcase ventilation).

  • The Evaporative Emission Control System prevents fuel vapor from being released into the atmosphere. This system burns the vapors under proper engine operating conditions after collecting them in the canister.

  • The Exhaust Emission Control System converts three pollutants: hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) into harmless substances using a three-way catalytic converter.

Circuit Diagrams

Schematic Diagram

Troubleshooting

Troubleshooting

Symptom Suspected Area
Engine does not start or is hard to start Vapor hose damaged or disconnected
Engine cranks hard Purge control solenoid valve malfunction
Rough idle or engine stalls Vapor hose damaged or disconnected
PCV valve malfunction
Rough idle Evaporative Emission Control System Malfunction
Excessive Oil Consumption PCV hose clogged

Test yourself

A quick Kia Rio YB quiz: every answer comes with an explanation and a link to the manual page.