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

Radiator Cap Testing

1. Remove the radiator cap, wet its seal with engine coolant, and then install it on a pressure tester.

2. Apply a pressure of 93.16 ~ 122.58kPa (0.95 ~ 1.25kgf/cm², 13.51 ~ 17.78psi).
3. Check for a drop in pressure.
4. If the pressure drops, replace the cap.
Radiator Leakage Test
1. Wait until engine is cool, then carefully remove the radiator cap and fill the radiator with engine coolant, then install it on the pressure tester.
2. Apply a pressure tester to the radiator and apply a pressure of 93.16 ~ 122.58kPa (0.95 ~ 1.25kgf/cm², 13.51 ~ 17.78psi).

3. Inspect for engine coolant leaks and a drop in pressure.
4. Remove the tester and reinstall the radiator cap.
Check for engine oil in the coolant and/or coolant in the engine oil.

Removal and Installation
1. Disconnect the battery terminals. (Refer to Engine and transaxle assembly in this group) 2. Remove the air cleaner assembly and the intercooler inlet/outlet hoses. ...

Water pump. Components and Components Location
Components   1. Water pump pulley 2. Water pump sub assembly 3. Water pump gasket 4. Water pump cover 5. Water pump cover gasket 6. O-ring 7. Water inle ...

See also:

Air Bag Warning
This warning light will remain on for approximately 6 seconds each time you turn the ignition switch ON. If the system does not operate as described or if the light comes on while the vehicle is ...

Air Conditioning System Operating Tips
If the vehicle has been parked in direct sunlight during hot weather, open the windows for a short time to let hot air inside the vehicle escape. To help reduce moisture on the inside of windo ...

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 (17 ...

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