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  1. #1

    Join Date
    Jun 2009
    Holyoke, MA

    Antifreeze pressure test ?

    I have a 04 4tec SC that is loosing antifreeze. I am looking to do a pressure test on the system. Just wondering what the proper psi to test should be and also if you check at the cap, do you just plug the overflow hose?

  2. #2
    Steve STSPERFORMANCE's Avatar
    Join Date
    Dec 2007
    Cambridge, Ohio
    13 psi if you use the corrrect fitting on the coolant bottle you wont have to plug the overflow. make sure there is a good clamp on it spray windex on the bottle fittings under pressure to make sure your not leakin any air

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