A foghorn sound coming from the toilet usually stems from problems with the ballcock valve, also known as the flapper or toilet fill valve. Some toilets have metal ballcock valves that contain washers inside. If that washer gets loose or worn, it can cause this sound.
If your toilet is making a foghorn noise, it could be because of a loose washer inside the “float”—a black, ballock-style valve that is common on older units. Lift the tank lid and flush your toilet while holding up the float, and if the foghorn noise goes away, you've located the problem.
If your toilet making foghorn noise after flushing, it's likely because it has a metal ballcock (don't laugh) fill valve. The washer inside the assembly may be loose or worn.
2) Foghorn
A foghorn sound in your plumbing could be a number of things. It may be a faulty ballcock in the toilet, a loose faucet washer, or a valve in the washing machine. It may also be permeating your entire house, in which case it could be from loose or old pipes or a malfunctioning regulator.
A worn-out flapper will allow water to leak into the bowl of the toilet, causing a slow leak within the tank. When the tank refills, it creates the vibrating noise you hear.
Replace Old Pipe Mounts: When you run hot water through your pipes, they can start to expand, leading them to bang against your pipe mounts. If this is happening in your home, you can easily solve the problem by installing plastic pipe clamps that enable expansion without the loud moaning.
If the groaning, moaning, or whining sound is accompanied by a toilet that backs up on occasion, slow draining sinks and tubs, and foul smells coming from your drains, a blockage is likely. My advice? Call a local plumber immediately.
When water pipes produce groaning or hissing sounds, it typically indicates a constriction somewhere in the waterline. As the water flows through the narrower section, it creates noise. This issue commonly occurs in faucets and toilets as washers and internal fixtures wear out.
Gurgling sounds typically come from drainpipes. This sound happens when the water can't drain properly, usually when there's a clog in the water pipes. Drain clogs often happen due to hair, grease, soap scum or objects that fall down the drain. They can happen suddenly or build up slowly over time.
Air in water pipes will sound like a hiss or pop. Alternatively, the trapped air can cause loud gurgling and prolonged vibrating noises. Other sounds are loud noises and bangs emanating from the pipes; this clearly indicates air traveling in the pipes.
Turn on both the hot and cold water to about 1/8th of the way on all the faucets. Leave the water running for about two minutes. Start from the lowest faucet in the house to the highest faucet. This allows the water pressure of the system to force all of the air from the pipes and out through the faucets.
What Does Air in Water Pipes Sound Like? Air in water lines will likely sound like a hiss or pop(s) emanating from the pipes. The causes can range from the simple to the complex, with the source of the air varying depending on the situation.
How do you know if plumbing isn't vented properly? Signs of poorly-vented plumbing include gurgling sounds, slow drainage, bubbling water in the toilet bowl or empty toilets after flushing, or sewer smells.
Using a solution of baking soda, vinegar, and hot water
For more stubborn clogs, a combination of baking soda, vinegar, and hot water may do the trick. Because vinegar is an acid and baking soda is a base, mixing the two will cause a chemical reaction that will create pressure and possibly dislodge the clog.
Combine baking soda with vinegar at a ratio of 1:4 and mix the mixture in 60 gallons of water. As you pour the water down the drain, use the plunger/drain snake. The pressure of water will easily dislodge any debris from the main sewer line.
The main thing you can do for your plumbing system is to clean drains once a week. This can be done easily with a little baking soda and apple cider vinegar. Simply pour the two substances down the drain and let it foam up before flushing the toilet. This will clear out any small clogs forming in your system.
Make your own drain cleaner by pouring one cup of baking soda and two cups of vinegar into the toilet and adding a half gallon of hot water. Dish soap can also help loosen some obstructions. When using either method, allow the solution to sit overnight and then flush the toilet to see if the obstruction has cleared.
Plumbers Say You Should Never Use Drano. Drain cleaners are a popular solution when homeowners notice a clogged drain. But it's also one of the most commonly misused products out there. Any plumber will advise against its use.
Will an airlock clear itself. Even if you run out of water, air should automatically clear in a well-constructed low-pressure water pipe system. The air should naturally climb to the top and discharge as the pipe system fills up.
Air in water pipes will sound like a hiss or pop. Alternatively, the trapped air can cause loud gurgling and prolonged vibrating noises. Other sounds are loud noises and bangs emanating from the pipes; this clearly indicates air traveling in the pipes.