: I recently had a growling noise when flushing, and you said stopped up vent. It stopped on it;s on and my water pressure improved. No noise now, but pressure is gone. I have a leak into a light fixture on first floor of two story. HVAC guys,and roofer say water may be coming in through pipes. How? and what do I do? My Dad and brother owned plumbing companies, but they both died and left me plumberless.