Kia Optima: Inspection - Thermostat. Repair procedures - Cooling System - Engine Mechanical System - Kia Optima TF 2011-2021 Service ManualKia Optima: Inspection

1. Immerse the thermostat in water and gradually heat the water.

2. Check the valve opening temperature.

Valve opening temperature: 82 ± 1.5°C (179.6 ± 2.7°F)

Full opening temperature: 95°C (203°F)


If the valve opening temperature is not as specified, replace the thermostat.
3. Check the valve lift.

Valve lift : 8mm (0.3in.) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.

Removal and Installation
Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, e ...

Thermostat. Troubleshooting
Troubleshooting   Symptoms Possible Causes Remedy Coolant leakage • From the thermostat gasket ...

See also:

Side Body Body Repair
Side Body A Front side member tooling hole (O20)Fender apron tooling hole (O10)Front door upper hinge mounting hole (O13)Front door lower hinge mounting hole (O13)Fender panel mounting hole (O6.6 ...

Front Body B
Hood hinge mounting hole (Ø10) Fender apron upper inner panel tooling hole (Ø6.6) Engine mo ...

Specifications
Specifications Item Specification Type Motor Driven Power Steering Steering gear Type Rack & Pinion ...

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