Kia Rio: Emission Control System / Evaporative Emission Control System

Kia Rio 2017-2022 YB Service Manual / 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 2017-2022 YB Owners Manual: Tire specification and pressure label, Engine number


Tire specification and pressure label The tires supplied on your new vehicle are chosen to provide the best performance for normal driving. The tire label located on the driver's side center pillar gives the tire pressures recommended for your vehicle. Engine number ■ Gamma II 1.6L MPI ...

Kia Rio 2017-2022 YB Service Manual: Tailgate


Repair procedures Adjustment (5Door) 1. After loosening the tailgate hinge (A) mounting bolts, adjust the tailgate by moving it up and down, or right and left. 2. Adjust the tail gate height by turning the tailgate overslam bump ...

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