Lets take a look at why the pressure cap is important to the cooling system. Without it a Land Rover engine can be prone to suffer from overheating. Featuring the Sykes Pickevant pressure cap tester and Sealey cooling system pressure tester. We explore the radiator / expansion tank cap, explain why it is required to work correctly, pressurising the cooling system and an official explaination why pressure is required in the system.
As we move through this cooling system maintenance and repairs for Land Rovers series we will continue to expand your knowledge of vehicle cooling system theory.