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Home >> Saturn >> 2006 >> Ion Red Line >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Diagnostic Information and Procedures >> Pressure Cap Testing >> Test Procedure

Test Procedure

  1. Remove the pressure cap.
  2. Wash the pressure cap sealing surface with water.
    Fig 1: Pressure Testing Radiator Cap
    GM850101Courtesy of GENERAL MOTORS CORP.
  3. Use SA9141E  (1) with one of the following attachments (2): See Special Tools .
    • J 42401  in order to test the radiator cap. See Special Tools .
    • J 46143  in order to test the intercooler reservoir cap
  4. Test the pressure cap for the following conditions:
    • Pressure the release when SA9141E  exceeds the pressure rating of the pressure cap. See Special Tools .
    • Maintain the rated pressure for at least 10 seconds.

      Note the rate of pressure loss.

  5. Replace the pressure cap under the following conditions:
    • The pressure cap does not release the pressure which exceeds the rated pressure of the cap.
    • The pressure cap does not hold the rated pressure.
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