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Sink is not vented properly and the water from the p-trap under the sink COULD be sucked out by the hydrostatic pressure from the toilet flushing.
If this noise occurs after shutting off a fixture (e.g., shower or sink), I'd pop the lid on the toilet tank and check there. Sometimes, this type of noise occurs when water pressure is reduced somewhere else, causing the fill valve to open slightly and howl like a foghorn. So, after shutting off the water and hearing the noise, pull up on the toilet tank float to see if it stops. If it does, replacing the fill valve will fix it.if still problem persist call for plumbing repair service.
Shut the water supply off to the toilet. Flush the toilet. Pull the old flapper out and replace it with the same type. Turn the water back on and test the toilet.
1. First loose the bolts that connect it to the flange on the floor and place the toilet in the bathtub 2.Turn off the water supply 3. Remove the lid of the toilet tank and flush the toilet 4. Use a plastic cup & dry sponge to scoop out water and dry up water drop. 5. Disconnect the water supply tube by turning the compression nut on the water supply valve. 6. use a flat head screwdriver to pry the caps from the washers at the base of the toilet. 7. Remove the nuts by using a wrench from the bolts. 8.Place the nuts, washers, and caps properly. 9. Hold the toilet under the bowl and rock it gently back and forth to break the old wax seal. 10. Lift the toilet off of the floor and set it down on a blanket, a piece of cardboard or in the bathtub. For more information visit mytoiletspares.co.uk
The term "water-closet" was an early term for a room with a toilet http://en.wikipedia.org/wiki/Flush_toilet
the reason why the toilet makes noise when you turn water on is because all the water lines are conected so when you turn on water the toilet gets affected and the water that goes down a drain goes to the water pipe.
water/friction
I reckon there is no air vent pipe on the drain line of the toilet you are flushing and the siphon action is sucking out the water in the loft toilet also.
No.... because that's just the sound of the water going down the hole and new water coming in its just how a toilet works
Fluctuations in city water pressure. Sometimes this is a bad toilet ballcock. Test by turning water off to one toilet at a time to see if it stops.
Unless it is a very strange arrangement, turning off the toilet on the first floor should only shut off the water to that toilet. It should have no effect on the upstairs shower.
flushing a toilet eating a hamburger eating a sandwich basically turning TV on
Try flushing the toilet right when the poop hits the water, no one can tell that it even happened.A2 you could try adding a few sheets of toilet paper to the water surface beforehand.Try coughing or tapping your feet to distract the noise or at least channel it off a bit, but don't worry no body really cares everybody does that.
it makes bumps because we too much beef and toilet water
Its when you drop a turd, it sinks in the toilet bowl's water, and then re-surfaces (making a blub noise). Thus the word blub.
Sink is not vented properly and the water from the p-trap under the sink COULD be sucked out by the hydrostatic pressure from the toilet flushing.
excessive amounts of air,loose washer in faucet,small debris or gravel in piping system.