TOILETS THAT KEEP ON RUNNING
How the toilet is supposed to work:
When you press the handle down on a flush tank, it raises the tank's flapper flush ball off of the seat on the bottom of the water storage tank. The tank's ball is a floating valve at the end of a heavy wire that is attached to he flush handle lever inside the water holding tank. This raising up lets water rush down into the bowl. As the water holding tank's level goes down, the flapper flush ball falls back onto the hole in the seat on the bottom of the water holding tank, and the flushing handle returns to its original position outside of the water holding tank. No more water can go into the toilet bowl then.
The bigger round float ball drops with the level of the water and an arm it is connected to opens the ballcock valve, which in turn refills the tank with water. As the tank's level rises, the bigger float ball rises with it. When the tank is full, the float ball stops rising, and it shuts off the flow of water coming into the tank from the ballcock. .
THERE ARE THREE PROBLEMS TO CHECK FOR THIS REPAIR.
1. When the water keeps running into the bowl:
Take the cover of the tank off. (Be careful not to drop it or place it in an area where it can fall from It will break if it hits the floor.) See if the tank is full. If it isn't full and is still letting water run, then the tank ball isn't seating right into the bottom of the tank because of improper alignment of the rod or chain that lifts it when it lets water flush the toilet. It could also be that the tank flapper ball is just tired and worn out. If that is the case, then take the flapper ball and the lift chain that it is attached to and replace the whole thing with a new flapper valve kit that can be bought at you favorite home improvement store.
2. If the tank is overfilling:
If the tank seems to be full, check to see if it is trying to overfill by letting water run over the top of, and into the overflow valve. If that is happening, then lift up the arm that is attached to the float ball which regulates the tank water level, and see if that makes the water flow stop. If the water flow stops, then the arm holding the float ball needs to be bent down somewhat to stop the water flow. This will turn off the water flow quicker. If this doesn't do the trick, then unscrew the float ball and shake it to see if there is water inside it. If you hear water sloshin around, buy a new float ball.
3. When the ballcock water regulator needs replaced.:
If the float arm fix does not work, then the water ballcock need to be replaced. This is easy to replace. Turn off the water supply to the tank. The turn off is located under the tank. Flush the tank to empty it. You may want to use a sponge or paper towels to get the water level low enough to keep excess water from running out of the tank. Disconnect the water line to the toilet. Loosen the locknut that holds the ballcock to the holding tank. Lift the old ballcock out and install the new one in the reverse order of the disconnection. Problem solved.