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16 pounds
Not knowing what vehicle, 15 psi is probably average.
It takes a 15 pound cap.
16 #
Thermostat, water pump, radiator cap, headgasket, low coolant.
Make sure the engine is cool. Take off the radiator cap that is on the radiator. Pour in a half and half mixture of distilled water and antifreeze unti it is full then replace the radiator cap.
Under the large radiator looking cap in the engine compartment.
Good chance you have a bad head gasket or a cracked head.
i would say 18-22 pounds. should work fine...
If you have a threaded cap on your coolant reservoir that is your " radiator cap "
No , the " radiator " cap / pressure cap is the thread on cap on the engine coolant reservoir
The radiator cap is on top of the radiator.