Hyundai Kona: Cooling System / Thermostat Repair procedures

Hyundai Kona (OS) 2018-2025 Service Manual / Engine Mechanical System / Cooling System / Thermostat Repair procedures

Removal

•	Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency.

1.	Drain engine coolant so that its level would be under the thermostat height. (Refer to Cooling System - "Coolant")

Remove the radiator lower hose (A).

•	When installing ladiator hoses, install as shown in illustrations.

Remove the water inlet fitting (A).

Tightening torque :

18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)

4.	Remove the thermostat (A).

Install in the reverse order of removal.

•	Install the thermostat jiggle valve facing upwards.

6.	Fill the radiator with water through the radiator cap and tighten the cap. (Refer to Cooling System - "Coolant")

7.	Start the engine and check for leaks.

8.	Recheck engine coolant level.

Inspection

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

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.

Check the valve lift.

Valve lift : 8 mm (0.3 in) or more at 95 °C (203 °F)

If the valve lift is not as specified, replace the thermostat.

Thermostat Components and components location

Components 1. Water inlet fitting 2. Thermostat ...

Thermostat Troubleshooting

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

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