Hyundai Elantra: Emission Control System > Evaporative Emission Control System > Fuel Filler 
Cap > Description and Operation - Emission Control System - Hyundai Elantra MD 2010-2018 Service manualHyundai Elantra: Emission Control System > Evaporative Emission Control System > Fuel Filler Cap > Description and Operation


Description

A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which seals the fuel filler. After the gasket on the fuel filler cap and the filler neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set.


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