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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 86 (Engine Cooling System - 1.6L - Optima (Except HEV)) >> Thermostat >> Repair Procedures >> Removal

Repair Procedures: Removal

WARNING: This page is about a different variant/trim than selected.
NOTE: Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency.
  1. Drain the engine coolant.

    (Refer to Cooling System - "COOLANT ")

  2. Remove the radiator lower hose (A).
    Fig 1: Locating Radiator Lower Hose
    G11822800Courtesy of KIA MOTORS AMERICA, INC.
  3. 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)

    Fig 2: Locating Water Inlet Fitting
    G11822801Courtesy of KIA MOTORS AMERICA, INC.
  4. Remove the thermostat (A).
    Fig 3: Locating Thermostat
    G11822802Courtesy of KIA MOTORS AMERICA, INC.
  5. Install in the reverse order of removal.
    NOTE: Place the thermostat with the jiggle valve (A) upward.
    Fig 4: Locating Jiggle Valve
    G11822803Courtesy of KIA MOTORS AMERICA, INC.
  6. Fill with the engine coolant.

    (Refer to Cooling System - "COOLANT ")

  7. Start engine and check for leaks.