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Home >> Subaru >> 2021 >> WRX STI >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Cooling System (2.0L)) >> Radiator >> Inspection

Section 12 (Engine Cooling System (2.0L)): Radiator: Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Check that the radiator does not have deformation, cracks or damage.
  2. Check that the hose has no cracks, damage or loose part.
  3. Remove the radiator cap, fill the radiator with engine coolant, and then install the radiator cap tester to the filler neck of radiator.
    G11576763Courtesy of SUBARU OF AMERICA, INC.
  4. Apply a pressure of 157 kPa (1.6 kg/cm2 , 23 psi) to the radiator and check the following points:
    • Leakage from the radiator or its vicinity
    • Leakage from the hose or its connections
    CAUTION:
    • Engine should be turned off.
    • Clean the check points.
    • Be careful not to deform the filler neck of radiator when installing and removing the radiator cap tester.
    • Be careful of engine coolant from spurting out when removing the radiator cap tester.