Quote:
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.
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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.