1. Check the radiator cap.
A) Remove the radiator cap, moisten its gasket with coolant and install on the tester.
b) Apply pressure 93-123 kPa.
V) Make sure the pressure is holding. If the pressure drops, replace the radiator cap.
2. Check the radiator.
A) Wait until the engine has cooled down, carefully remove the radiator cap and pour coolant into the radiator up to the filler neck.
b) Connect the tester to the radiator and apply a pressure of 93-123 kPa.
V) Check the engine for coolant leaks and pressure drops.
G) Remove the tester and install the radiator cap.