The PSI (Pounds per Square Inch) rating is what pressure the radiator cap is designed to hold up to but not exceed in the cooling system.
Psi can have up to five stars for its rating.
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.
PSI stands for pounds per square inch, which is a unit of pressure. The typical pressure range for a radiator system is between 12-18 psi when the engine is cold. It is important to check and maintain proper pressure to ensure optimal cooling efficiency and prevent overheating.
You should replace the radiator cap if it is leaking coolant, not sealing properly, or showing signs of damage. A faulty radiator cap can lead to issues like overheating, coolant loss, or air entering the cooling system, which can cause damage to your engine. Regularly inspecting and replacing the radiator cap can help prevent these problems and maintain the efficiency of your cooling system.
When a radiator cap does not retain pressure, the coolant can boil at a lower temperature, leading to overheating of the engine. This can cause damage to engine components and potentially result in a breakdown. It is important to replace a faulty radiator cap to prevent these issues.
Look on the radiator cap - there should be a psi rating stamped on there.
16 #
16 psi
On a 1998 Ford Expedition : The thread on cap on your engine coolant reservoir is the 16 PSI pressure cap / radiator cap
On a 2001 Ford Expedition : The thread on cap on your engine coolant reservoir is the ( 16 PSI ) pressue cap / radiator cap
On a 2003 Mercury Sable : The thread on cap on the engine coolant reservoir is the 16 PSI pressure cap / radiator cap
On a 2002 Mercury Sable : The thread on cap on your engine coolant reservoir is the 16 PSI pressure cap / radiator cap
It should be printed on the radiator cap. Most are around 16 psi.It should be printed on the radiator cap. Most are around 16 psi.
On a 1998 Ford Expedition : The thread on cap on your engine coolant reservoir is the 16 PSI pressure cap / radiator cap
On a 1995 Ford Crown Victoria : The thread on cap on your engine coolant reservoir is the 16 PSI pressure cap / radiator cap
On a 1998 Ford Taurus : ( the thread on cap on your engine coolant reservoir is the 16 PSI pressure cap/ radiator cap )
The thread on cap on your engine coolant reservoir is your pressure cap / radiator cap ( 16 PSI ) on a 1996 Ford Taurus ( all engines )