Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Radiator Cap: Testing and Inspection





Inspection

Radiator Cap Testing

1. Remove the radiator cap, wet its seal with engine coolant, and then install it on a pressure tester.




2. Apply a pressure of 93.16 - 122.58kpa (0.95 - 1.25kg/cm2, 13.51 - 17.78psi).
3. Check for a drop in pressure.
4. If the pressure drops, replace the cap.