Hello The way we normally find vent leaks is with smoke,you can purchase smoke bombs to put in pipe and find leak that way.
How do you mknow this is a vent leak?
because it is a newly installed pipe thats waiting for inspection
is this new construction?
yes and where can i get a smoke bomb
To properly test for inspection you have to cap all pipes and fill entire system with water.
and it has to hold water!
this is only a vent pipe
for a inspection has to be pressure tested if you cant get air to hold then you will have to fill with water to find leak.
put a test tee at the bottom of pipe and fill it up.
why not smoke to find the hole?
not the easiest way to test normally used for older homes where plumbing cant be accessed,you can get bombs at ferguson plumbing supply if they dont carry them some dont they can tell you where to get in your area.
ok thank you