Pressurizing the cooling system raises the boiling point of the engine coolant. under normal conditions this keeps the coolant from boiling and having to be frequently topped off.
To pressure test a radiator cap, you will need a radiator pressure tester kit. Remove the radiator cap, attach the pressure tester to the radiator neck, and pump it up to the specified pressure level. Observe for any leaks or pressure loss to determine if the radiator cap is functioning properly.
the radiator pressure cap was invented by Albert Einstein
No, there should not be pressure in the radiator after cooling down. If there is still pressure, it could indicate a problem with the radiator cap or the cooling system, such as a leak or a failing pressure release valve.
You attach a pressure test kit to where the radiator cap goes, and pressurize the system. If it holds pressure, it's good.
The radiator cap controls cooling system pressure.The radiator cap controls cooling system pressure.
pressure-relief valve
No , the " radiator " cap / pressure cap is the thread on cap on the engine coolant reservoir
You can blow into it. that hose will only really be open to the radiator when too much pressure has built up and your radiator cap releases pressure into the overflow. All other times the tubes access to the radiator is blocked by a properly functioning radiator cap.
Written on the top or undeside of the OEM radiator cap.
radiator cap
radiator termostate
You use a radiator pressure tester to apply pressure to the cooling system. You can then look for leaks.