Why does my downstairs toilet bubble when the upstairs toilet is flushed? Bad plumbing design. your system isn’t vented properly, causing inline pressure to push sewer air back through the p trap if the downstairs toilet.

Why does my downstairs toilet run when the upstairs toilet flushes?

Your problem is the distance the water/waste is falling. To eliminate the bubbling a vent would need to be added or an up flow valve after the basement toilet prior to entering the main line. Up flow valves are like a check valve to prevent lower floors from having this problem.

Why does one toilet run when another is flushed?





The “running” you hear is likely the fill valve. Perhaps the fluctuation of your water supply pressure when one toilet’s fill valve opens is causing the other toilet fill valve to momentarily leak-by or open.

Can one toilet affect another?

If two toilets on the same floor of your house seem clogged, then you may have a drain line blockage. The drain line is the one line that the other drains will feed into. This problem would cause more than one plumbing fixture to back up. It’s also why you can’t fix it with a good un-clogging.

When I shower upstairs my downstairs toilet overflows?

If your toilet overflows when you’re taking a shower, it means you have a clog between the toilet and the sewer. When the shower runs, it backs up into the waste water lines in your house and overflows at the first place it can, which happens to be your toilet. The only way to solve the problem is to clear the clog.

How do you fix a phantom flush?


Quote from Youtube video: Put your hand in 3/4 of the way down the center of the tank and grab the flush valve to a quarter turn counterclockwise to remove the flush valve from the housing.

What is a phantom flush?





Ghost flushing, also known as phantom flushing, occurs when the toilet tank flapper is no longer creating a watertight seal with the flush valve, causing water to unnecessarily leak into the toilet bowl.

How do you unclog a main sewer line?

Hot Water to Loosen Sticking Debris



Allow hot water to run through your plumbing system for at least five to 10 minutes. The hot water helps to loosen debris such as deposited grease, oils, or any coatings on the walls of the drains. Doing this several times might best and easiest way to unclog that main sewer line.

How do you unclog a drain line?

If you find yourself with a clogged drain line, hot water, vinegar, and baking soda can serve as an inexpensive way to unclog it. Pour the hot water down the drain first, then baking soda, then vinegar, followed by more hot water after you’ve let the mixture sit in the drain for 10-15 minutes.

Is my main sewer line clogged?

Some signs that your main sewer line is clogged include:

  • Water Backing up in Your Toilet or Sink. One of the first signs there’s a problem with the main sewage line is water backing up in the sink or toilet. …
  • Slow Drains. …
  • Funky Smells. …
  • Flooded Yard.



Is Ghost Flushing serious?

A ghost flushing toilet is a problem, but the occurrence is also a symptom. When the toilet ghost flushes, it is typically the sign of a loose flapper. The fact that it has flushed on its own once is cause enough to replace the flapper. However, you can run a conclusive test to make sure the flapper is the cause.

Why does my toilet spontaneously flush?

A toilet that cuts on and off by itself, or runs intermittently, has a problem that plumbers call a “phantom flush.” The cause is a very slow leak from the tank into the bowl. This problem is almost certainly caused by a bad flapper or flapper seat.

How do you stop a double flushing toilet?



With a simple adjustment of your toilet flapper, this is quickly resolved. If your toilet is flushing twice, it is most likely due to the fact that it is staying open too long and flushing too much water. If you have an adjustable flapper, this can be corrected by adjusting your toilet flapper to close quicker.

What causes double flush?

The most common reason why a toilet flushes twice is because the toilet flapper stays up for too long, leaving the flush valve open and allowing too much water to escape from the tank into the bowl. Sometimes, toilet flappers need to be replaced, even if they are the correct type for the toilet.

How do you adjust a toilet flush?

Quote from the video:
Quote from Youtube video: The one thing you can do is just hold the lever down longer and a lot more water will flow from the tank to the bowl to get a better flush.