Kia Optima: Description and Operation - Evaporative Emission Control 
		System - Emission Control System - Kia Optima TF 2011-2026 Service ManualKia Optima: Description and Operation

Description

The 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 a canister filled with charcoal.

The canister temporarily holds the vapor in the charcoal. The ECM will control the system in order to draw the gathered vapor into the combustion chambers during certain operating conditions. Engine manifold vacuum is used to draw the vapor into intake manifold.

Evaporative Emission Control System
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Schematic Diagrams
Schematic Diagram CanisterThe Canister is filled with charcoal and absorbs evaporated fuel vapor from the fuel tank. The gathered fuel vapor in canister is drawn into the intake manifold b ...

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