Kia Optima: Evaporative Emission Control System / Fuel Filler Cap
Description and operation
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 indicating the seal has been set.

Repair procedures
Removal
1.
Disconnect the negative (-) battery cable.
2.
Remove the stabilizer bar bushing (A).
Tightening ...
Repair procedures
Removal
1.
Disconnect the negative battery (-) terminal.
2.
Remove the [LH] rear wheel guard.
(Refer to Body - "Rear Whee ...
Other information:
This system provides further enhancements to vehicle stability and steering responses
when a vehicle is driving on a slippery road or a vehicle detects changes in coefficient
of friction between right wheels and left wheels when braking.
WARNING - Tire/ Wheel size
When replacing tires and whee ...
For best battery service
Keep the battery securely mounted.
Keep the battery top clean and dry.
Keep the terminals and connections clean, tight, and coated with petroleum
jelly or terminal grease.
Rinse any spilled electrolyte from the battery immediately with a solution
of water a ...