Under what circumstance? New toilet, when you turn the water on, water goes down the overflow tube to fill the bowl. You don't have to flush it the first time to fill the bowl.
Inside the toilet tank there should be a small hose off of the fill valve that should be clipped to the inside of the fill tube to allow water to fill the bowl while it refills the tank after flushing.
That means that your toilet is clogged, or your toilet was clogged and you need to just flush once more.
putt More water in the bowl
because it is clogged If a toilet has a blockage it will over flowWhen you say the toilet will fill are you talking about the tank?
Most likely, the problem is in the cistern (the thing behind the toilet bowl with the handle in it). If you think it's obstructed, lift the lid on the cistern and see if you can see why; otherwise, fill a bucket with water and pour it quickly into the bowl. That flushes the toilet and will serve until you can get a plumber to deal with the cistern. It will also help to keep the risk of disease low.
The toilet may take so long to fill after you flush because the water pressure is so low. Generally, the water should fill up the tank in less than a minute.
It sounds like you are ready for a flush valve replacement.
the toilet bowl will fill the bowl to a specific level to allow the trap to work properly and once the tank is done filling then you should have no water running into the bowl. To test and see if your tank is leaking into your bowl just put a few drops of food coloring in your filled tank and if you see the color in your bowl then you most likely have a leaky flapper or flush valve or can be your height of your tank water is to high and its running through the overflow or the fill valve is syphoning.
All toilets have a different normal level. The first flush could have created a vacuum and pulled it lower. Try a second flush. Is the small fill tube in the tank running into the overflow tube? This runs into the bowl and will help fill it.
It sounds like you need a new ballcock valve or either your fill tube has come off your flush valve. Just take tank lid off and check to see if water is going down the tube in middle of tank.
Your flush valve is probably overflowing due to a bad fill valve, or the float is set too high. Open up your tank and look inside to see what happens when you flush.
it is below grown level have you checked the level of water in the bowl?if it is not up to maximum level the toilet will not flush properly to check that , fill the bowl slowly with water using a bucket or some other container until the level stops rising then mark this level with a pencil . then flush the toilet and let it refill if the level in the bowl is not up to the pencil mark you need to adjust the fill tube flow . there are two screws on top of the valve one for the tank level and the other for the bowl level good luck
change the flush valve
Do you watch it not get filled up? There is a little hose inside the tank that helps fill the toilet when the tank is filling. It may be detached from the vertica pipe. < --- this answer is for the bowl not filling up after you flush the toilet There can be many reasons why the tank will not fill up and one of them can be because your chain that pulls the rubber flapper up to flush is either caught on something or the rubber flapper can be pulled to high and will not fall back down to close. Another is if you have a plastic cone flapper then the flush handle bar that slips into the plastic cone sleeve can be wedged against the toilet tank. another reason can be because your fill valve is clogged or the water is shut off.
look inside your tank and see that the toilet bowl fill tube is connected and flowing with water when flushed. the fill tube is a 1/4-3/8" tube that is connected to the fill valve to the overflow and it should be spraying water down the overflow when the fill valve is filling. or Call a plumber
Bowl fills up but doesn't go down? The toilet or the drain is probably plugged. Try using a plunger on it or fill a 5 gallon bucket with water and pour it into the bowl as fast as you can without causing the bowl to overflow. A lot of the time, this will flush out the line because that is 3 or 4 times the volume of water that is normally used.
Most people don't. If you do then visit a doctor or have a plumber call.
because of the leprechauns
Yes, adjust the fill valve, different ways for different types.
Check the flush valve to see if it is sealing tight. Check the fill valve to see if it needs to be rebuilt or replaced.
Usually about 6 litres in modern toilets.
there is many different toilet tanks that use different fill valves but the concept is the same EXCEPT for pressure assist or (mostly in commercial buildings) flush valves which do not have toilet tanks. When water flows into the tank threw the open valve it begins to fill up the tank and while the tank is filling it is also raising the float which is connect to the valve and when the float raises to a set height it shuts of the fill valve by pressure from the float arm. Pressure assist toilets have pressure tanks inside the toilet tank and uses the pressure from the supply line to flush the bowl, I think they are the best toilets to buy if you don't mind the noise and if you have good water.
Buy a new toilet. The trap in the toilet probably has a crack in it allowing the water in the bowl to leak out.ANS 2 - Have you carefully inspected the bowl for cracks ? - Please do this first, before rushing out and wasting money. There may be other reasons for this/
My little dog did when I unfortunately forgot to fill its water bowl! But fortunately the toilet had been flushed and the water was RELATIVELY clean.