Pressure test failed

[Zach Yonek]

Looking at a HUD home where the pressure test failed for the plumbing. Wondering what kind of numbers to conservatively budget for a worst case scenario? With it being a HUD home, I'm told they won't turn the water on till an offer has been accepted? So I'm not sure how to gauge how much of a hole this issue could become. Thanks all!

[Kiet N.]

It's very hard to find the leak by listening to the air leak sound while the compressor is running. I ran into this issue once and came up with the following technique:

a. Mix FOOD color with tap water

b. Inject the colored water into the system 

c. Inject  the system with compressed air 

d. find the leak(s) where the colored water appears.