[b]Leak in finished basement coming from under the wall (directly below first floor bathroom).[/b] [b]Wall is not wet, ceiling is not wet. Recessed lights, however, are flickering, but no evidence of water near them.[/b] [b]What I did:[/b] 1 - Replaced faucet to make sure leak was not at faucet. [b]Other info:[/b] 1 - just replaced toilet flapper and toilet fill valve in tank 2- also just snaked out a clog in the bathtub - pulled up a little hair but was surprised that I didn't pull up much more. 3 - leak is a gushing leak that happens once and a while (maybe a gallon of water at a time); however, when I tested sink, tub, shower, leak did not happen immediately or even soon after. [b]What I will check today:[/b] 1 - supply line to toilet. 2 - shower knob stems. [b]My questions:[/b] [b]1 - [/b]Why is leak coming from under wall and no other wetness? 2 - What else should I be checking? [b]Thanks!![/b]

I just noticed that an outdoor pipe is leaking (from the rusty "Vent" part at the bottom of the picture). Any suggestions how to fix this would be greatly appreciated. Thank you!