Toilet driping sound at bottom after flushing

Why is the water leaking out of the tank? There's only reason for that, the water is slowly leaking by the plunger.check the plunger aT The bottom of the tank it's activated by the handle.shut the water supply off empty the tank,clean the bottom of the plunger refill tank .problem should be fixed if not replace plunger.. Happy plumbing.

Change flush valve, it comes with tank to toilet gasket, which sounds like your problem.

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Is The water leaking in or out check the stopper is good and that it is seating right

Hi turtlerose07...

Sounds like you have one or two problems with the fluidmaster 400.
1...The float is set too high allowing the water to overflow into the overflow pipe and allowing your pump to run too much.
2...Flapper valve inside at the bottom of the tank is not sealing properly, thus allowing water to leak and causing the fluidmaster to keep trying to fill the tank with water and causing the pump to run too much.
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You are going to have to adjust the valve you just installed. Most can be adjusted by pulling a ring close to the bottom upward and pulling the neck of the valve up, in turn adjusting the water level in the tank. There should be instructions in the box on how to raise the water level.

Hello- If you replaced old ball and rod set with new fluidmasters they will most likely need to be adjusted, not all toilet tanks are of equal height. You will have to adjust water height,meaning you must keep water level below fill tube located in center of the toilet tank. Adjustment is done from bottom of the fluidmaster, they screw in and out to adjust height. You will notice threads along the bottom part of the fluid master, on the inside of the tank,they adjust up & down! Goodluck!

try to replace the fluidmaster it is either that or your supply line is kinked,that or check the little black hose inside the toilet tank make sure that hose is not kinked,if neither hose is kinked replace the fluidmaster

I have installed 400A or 400LS valves on systems as low as 30psi, but below that I don't know that it would work very well if you needed it to fill faster.

Keep in mind that your pressure to the toilet will be 1/2psi for every foot above the fill level of the tank, which is reduced by friction loss in the pipe and fittings on the way to the toilet.

Does it leak from the overflow? If so then the washer at the top of the Fluidmaster needs to be replaced. If it is not going over the overflow then you will need to replace the flapper on the flush valve.