Hyundai Genesis (DH): 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 would seal 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 which indicates the seal has been set.

1. Cover
2. Torsion spring
3. Retainer
4. Gasket seal
5. Spring
6. Plate seal
7. Vacuum Valve
8. Spring

    Removal 1. Turn the ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the rear-left wheel & tire and house cover.

    Replacement 1. Turn the ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the canister assembly. (Refer to Evaporative Emission Control System - "Canister") 3.

    Other information:

    Hyundai Genesis (DH) 2013-2016 Service Manual: Components and Components Location

    C

    Hyundai Genesis (DH) 2013-2016 Service Manual: Photo Sensor Repair procedures

    Inspection 1. Turn the ignition switch ON. 2. Connect the GDS. 3. Emit intensive light toward the photo sensor using a lamp, and check the output voltage change. 4. The voltage will rise with higher intensive light and fall with lower intensive light.

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