Cooling system pressure

[Dwight Southerland]

Originally Posted by Ed Wright

I would pressure check the cap. May not be releasing at the proper pressure. Five to seven psi would be plenty. I actually don't run any pressure in mine. I just cut a small "V" in the rubber gasket. Never a problem. I jack the front of my car up when I fill the cooling system, and run my electric water pump while topping it off.

I was going to suggest a "no pressure system". I have always used a cap that seals at the top but no pressure mechanism. There are advantages.