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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

System Leakage Check


Cooling System Leakage Check





Use a radiator cap tester to force air into the radiator through the filler neck at the specified pressure of 150 kPa (22 psi) with a cap tester:
^ Leakage from the radiator
^ Leakage from the coolant pump
^ Leakage from the water hoses
^ Check the rubber hoses for swelling.

Cap tester: J-24460-01
Adapter: J-33984-A