01-06-2022, 07:35 AM
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CC Member
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Join Date: Dec 2015
Posts: 1,442
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Cooling system pressure testing, vacuum bleeding
Rather than buy a Stant or off brand Coolant pressure tester https://www.summitracing.com/parts/snn-mt300
I fabbed a hose with a valve stem end and attached it to the expansion tank port. I pressure test at 15-20 psi., leave it pressurized at least 20 min.
If you want to vacuum bleed all the air out of the cooling system you can buy a kit like this.
https://www.summitracing.com/parts/oes-24444
Or pull the schrader valve from the valve stem and install a dead-head (no pressure relief valve) radiator cap like I use on my Recovery tank. https://www.summitracing.com/parts/snn-10203
Take a 10 min break and no more air in the cooling system. You may have to do it more than once.
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