If it is not building pressure anywhere, it means that you have a sizable leak somewhere in the system. I would fill it with coolant and then start it and run it until I see a stream, and then try to follow it. It kind of sounds like something else must have popped or cracked when that hose came off and it is leaking somewhere that you simply cannot see with a pressure tester.
Or it could be that the pressure tester that you are using is not sealing up properly when you hook it up or something is wrong with it.
Friday, June 9th, 2017 AT 7:14 PM