Cap Testing (page 2 of 2)

A Radiator pressure tester (commercially available)

B Small adapter (commercially available)

1. Wait until the engine is cool, then carefully remove the radiator cap and fill the radiator with coolant to the top of the filler neck.
2. Attach the pressure tester to the radiator and apply a pressure of 95 – 125 kPa.
3. Inspect for coolant leaks and a drop in pressure.
4. Remove the tester and reinstall the radiator cap.

Note: Check for engine oil in the coolant and/or coolant in engine oil.