FixVault

Radiator Cap Testing

WARNING: This page is about a different variant/trim than selected.
  1. Remove the radiator cap, wet its seal with engine coolant, then install it on a pressure tester.
    G14557936Courtesy of KIA MOTORS AMERICA, INC.
  2. Apply a pressure of 79.4 - 122.58 kPa (0.95 - 1.25 kgf/cm2, 11.5 - 17.78 psi).
  3. Check for a drop in pressure.
  4. If the pressure drops, replace the cap.