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Water Pipe: Inspection

WARNING: This page is about a different car, the 2021 Subaru Ascent. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check for leaks.
    CAUTION:
    • 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.
      G13199098Courtesy 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
    • Significant pressure drop
    CAUTION: Be careful of engine coolant from spurting out when removing the radiator cap tester.
  2. Check that there is no deformation, cracks or other damages.
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