You need to open as much of the soffit as you can to access the 2" 45 on the back side of the TJI to confirm that is where the leak is. I suspect it is, judging by the stain on the 2" branch of the 3x2 wye.
Go to the upstairs to the fixture/s you suspect the 2" pipe to serve and run water. As the water is running, watch for drips and trace the drip to it's source. With the water off, you can also try wiggling the 2" pipe on the upstream side of the joist and see if it will pop out of the downstream fitting. You may get lucky and find a dry fit fitting that only requires to be pulled apart and glued. Or it may be something much more difficult and above your skill set. But at least you can run the diagnostics to save some money and be informed when talking to the plumber.
You need a bigger hole! You have make a patch on the dry wall, another foot or 2 won't hurt. Show me the other side of the joist .Is it just me or is it in that one pic that shows "here's the leak" that it looks like it's the only connection without purple primer? And perhaps no glue?
Cut the main pipe 2" away from the fitting on both endsThanks @Nealtw for staying with me on this. I watched those videos - that string thing is crazy!
ok. Sorry for the questions but I’m confused. Is this where I need to make the cuts?
then-using that special socket saver tool, I would need to use to clean out The blue circled sides? And then I’m using the black couplings to re-attach at the yellow lines?
It won't matter, that fitting goes in the garbage, he may need to cut it in half to get room to cut the other pipe.Ah ok, but still... I see no purple primer on that joint... It may not be the leak today, but tomorrow?
ok. So I see there’s a debate about how much to cut out. @TheEplumber are you suggesting centralizing the fix just in the leak pipe? So my pic from post #46 above?Why cut out a perfectly good fitting?
Yes that is what I was suggesting, I don't see a better why but i have been wrong before.ok. So I see there’s a debate about how much to cut out. @TheEplumber are you suggesting centralizing the fix just in the leak pipe? So my pic from post #46 above?
and Neal, I think you’re suggesting cutting out the entire branch piece + the short leak pipe & fittings. I got a better photo.
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also after cutting a little more, not sure how much more access it’ll give me but I was thinking about cutting through the ceiling. I did my best to feel up around there and think it’s open just above the ceiling there. The only problem is that the area is still Blocked by 2x4s which is just next to the main leak location.