When you flush the toilet, it can create a vacuum in the plumbing system, causing air to be pulled through the drain. This air can pass through the water in the bathtub trap, creating a gurgling sound.
When the toilet is flushed, it creates a sudden rush of water down the drain pipes. This rush of water can create a vacuum effect in the plumbing system, causing air to be sucked in through the bathtub drain. This air passing through the water in the bathtub can create a gurgling sound.
Probably because the line is still at least partially clogged.
When your bathtub gurgles when you flush the toilet, it is likely due to a problem with the plumbing system. This could be caused by a blockage in the drain pipes, improper venting, or a malfunctioning plumbing fixture. It is important to address this issue promptly to prevent further damage to your plumbing system.
your dads
Mainline stoppage.
Gravity
on average of average people it would be 4.5 flushes per day (poor toilet)
There is a blockage in your main sewerline.
To ensure your toilet flushes properly, you can regularly clean the toilet bowl and tank, check and adjust the water level in the tank, make sure the flapper is sealing properly, and avoid flushing items that can clog the toilet.
My g/f has this happen to her regularly and, it was only when I asked that she said she usually flushes once to get the flush working and then immediately after to make certain the toilet flushes everything away. She said that if a toilet has good pressure, it will often splash out when she flushes.
The noise from pipes when a toilet flushes is caused by the sudden rush of water through the pipes, creating vibrations and echoes that produce the sound.