Kia Optima: Change to "winter weight" oil if
necessary
In some climates it is recommended that a lower viscosity "winter weight" oil be used during cold weather. See section 8 for recommendations. If you aren't sure what weight oil you should use, consult an authorized Kia dealer.
Check battery and cables
Winter puts additional burdens on the
battery system. Visually inspect the battery
and cables as described in section
7. The level of charge in your battery can
be checked by an authorized Kia ...
Check spark plugs and ignition
system
Inspect your spark plugs as described in
section 7 and replace them if necessary.
Also check all ignition wiring and components
to be sure they are not cracked,
worn or damaged in any way. ...
See also:
Knock Sensor (KS) Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
2.
Drain the engine coolant (Refer to “Cooling System” in EM group).
3.
Remove the radiator u ...
Fuel Tank Pressure Sensor (FTPS). Schematic Diagrams
Circuit Diagram
...
Power Window Motor Repair procedures
Inspection
Front Power Window Motor Inspection
1.
Remove the front door trim panel.
(Refer to the BD group - "Front door")
2.
Disconnect the connector from the motor.
3.
Connect the moto ...