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Radiator Test

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
  1. Wait until the engine is cool, then carefully remove the radiator cap and fill the radiator with engine coolant to the base of the filler neck.
  2. Attach a commercially available pressure tester (A) to the radiator, and apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm2 , 14-18 psi).
    Fig 1: Identifying Commercially Available Pressure Tester
    G05952710Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Inspect for engine coolant leaks and a drop in pressure.
  4. Remove the tester, and reinstall the radiator cap.
  5. Check for engine oil in the coolant and/or coolant in the engine oil.