Hyundai Santa Fe: Evaporative Emission Control System / Description and operation

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.

Evaporative Emission Control System

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Schematic diagrams

Schematic Diagram 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...

Other information:

Hyundai Santa Fe (TM) 2019-2024 Service Manual: Repair procedures

Compression Pressure Inspection    • If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure...

Hyundai Santa Fe (TM) 2019-2024 Owner's Manual: Washer fluid

Checking the washer fluid level Check the fluid level in the washer fluid reservoir and add fluid if necessary. Plain water may be used if washer fluid is not available. However, use washer solvent with antifreeze characteristics in cold climates to prevent freezing...