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Home >> Subaru >> 2021 >> Forester Base >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine Cooling System >> Thermo Control Valve Assembly >> Inspection >> Water Leak Check
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Water Leak Check

CAUTION:
  • Stop the engine.
  • The engine coolant is pressurized when it is hot. Wait until engine coolant cools down before proceeding the work.
  • If the engine coolant is spilt over the engine, exhaust pipe or the under cover, completely wipe it off to avoid emission of smoke or causing a fire.
  1. Remove the radiator cap.
  2. Fill the radiator with engine coolant, and then install the radiator cap tester to the filler neck of radiator.
    CAUTION: Be careful not to deform the filler neck of radiator when installing and removing the radiator cap tester.
    G13224669Courtesy of SUBARU OF AMERICA, INC.
  3. Apply a pressure of 157 kPa (1.6 kg/cm2 , 23 psi) to the radiator and check the following points:
    • Leakage from the flow path of the engine coolant or its vicinity
    • Leakage from the hose or its connections
    • Significant pressure drop
    CAUTION: Be careful of engine coolant from spurting out when removing the radiator cap tester.
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