Why is there a loud noise when I flush the toilet?
Why is there a loud noise when I flush the toilet? When your toilet flushes, it opens a valve to get more water and then suddenly shuts the valve off. The water that was rushing to your toilet is now cut off and the pressure causes your pipes to make a loud banging noise. What does a gurgling toilet sound like? A: You're right to be concerned; that sound is not normal. When a toilet gurgles, it indicates that negative air pressure (suction) is building up in the drain line, creating an airlock of sorts. When this occurs, you'll hear...