Radiator Cap
In this manual: Radiator Cap
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RADIATOR CAP
RADIATOR CAP INSPECTION

1. Inspect the radiator cap for damage, cracks, and deterioration (wear, etc.).
2. Connect the radiator cap to a special tester.
3. Increase the pressure until the gauge needle stops moving (valve opening pressure).

4. If the gauge needle remains stationary for 10 seconds at a pressure above the maximum allowable valve opening pressure, the radiator cap is serviceable.
Test yourself
A quick Hyundai Elantra CN7 quiz: every answer comes with an explanation and a link to the manual page.
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