Q:

Why does my toilet gurgle and burp after flushing?

A:

Quick Answer

Toilets make odd noises, such as gurgles and burps, due to the movement of air through water. Most often, the air movement responsible for such noises is due to a clogged or improperly working vent stack. These clogs cause a vacuum to form as water drains. Once the force of gravity empties the water, the vacuum pulls air through the trap.

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Why does my toilet gurgle and burp after flushing?
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Full Answer

The proper name for the drain system in a home is the drain-waste-vent system. The nomenclature emphasizes the fact that the system's vents are as important as its function at waste removal and draining water. Vents help to dissipate sewer gases but also function to balance the air in the system. Plumbing codes require every drain and toilet in the home connect to an upward-sloping pipe that connects to one of the home's main vents. If the vent system is not working correctly, fixtures make odd noises.

While cleaning a vent is normally a simple procedure, it involves working on the roof several meters above the ground. Homeowners who are not comfortable working in these conditions should hire a plumber. The plumber normally uses a plumber's snake or water pressure to clear drains. Once they are working correctly, the strange noises normally end.

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Related Questions

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    How does a flushing toilet work?

    A:

    Flushing toilets use gravity and an increase in the height of water in the bowl when the user activates the flush valve to move water and waste through an "S-bend" into a drain pipe and out of the home. These simple devices have relatively few moving parts and, in most cases, offer many years of trouble-free service.

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  • Q:

    How do you fix flushing problems with a toilet?

    A:

    Repair a toilet with flushing problems by cleaning out the holes under the rim. Use the end of a wire coathanger to ream out the holes, and then dissolve the scale using a toilet-bowl lime remover. The process takes about an hour.

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  • Q:

    Why does a toilet make noise after flushing?

    A:

    There are a number of reasons why a toilet may make noise after flushing; however, a loud noise that takes more than a minute after flushing the toilet may indicate a restricted water flow or a problem with water pressure. In such a case, the pressure valve should be adjusted while the toilet is making the noise.

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  • Q:

    How do you fix a slow-flushing toilet?

    A:

    Repair a slow-flushing toilet due to a plugged main line by cleaning the line with a drain bladder. Locate and open the main cleanout, attach the bladder to a water hose, and insert it in the drain. Turn on the water hose to allow the bladder to work.

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