[BabyUnicornTaco]

I just completed my 08 4.8i transfer pipe, valley pan, water pump, thermostat, and various hose replacement. I am ready to complete a pressure test. What would be my method for completing the test with the battery disconnected? Fill with distilled water as much as possible and pressure test?

 

[deroy]

Thats better than no test at all. Air is much more compressible than fluid, so a small leak where you happen to have an air bubble will result in much slower loss of pressure than a fluid leak. But pressure will still drop. Just give the test more time. If it holds, it holds.


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