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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 59 (Evaporative Emission Control System (HEV)) >> Evaporative Emission Control System >> Schematic Diagrams >> Schematic Diagram >> Fuel Filler Cap

Fuel Filler Cap

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A ratchet tightening device in the threaded fuel filler cap reduces the chances of incorrect installation, when sealing the fuel filler. After the gasket on the fuel filler cap and the fill neck flange make contact, the ratchet produces a loud clicking noise indicating the seal has been set.