Cooling System - 2.4L: Removal & Installation Kia Optima II рестайлинг

Removal

Note. Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat.

Scheme 25

Scheme 26

1. Drain engine coolant so its level is below thermostat.
2. Disconnect the breather hose (A), ECM connector (B) and remove the air cleaner assembly (C).
3. Remove the radiator lower hose (A).
4. Remove water inlet fitting (A) and thermostat (B).

Scheme 27

Scheme 28

1. Immerse the thermostat in water and gradually heat the water.
2. Check the valve opening temperature. Valve opening temperature : 82°C (177°F) Full opening temperature : 95°C (205°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 (205°F) If the valve lift is not as specified, replace the thermostat.

Scheme 29

Scheme 30

Scheme 31

1. Place thermostat (B) in thermostat housing. NOTE: Install the thermostat with the jiggle valve upward.
2. Install the water inlet fitting (A). Tightening torque : 14.7 ~ 21.6 N.m (1.5 ~ 2.2 kgf.m, 10.8 ~ 15.9 lb-ft)
3. Install the radiator lower hose (A).
4. Install the air cleaner assembly (C) then connect the breather hose (A), ECM connector (B). Tightening torque : 7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)
5. Fill the engine coolant.
6. Start the engine and check for leaks.
7. Recheck the coolant level.