My downstairs toilet is running water continuously.  When you flush it does so fine, it fills up and stops when required and then after about 5 minutes starts to run water.

So last night I observed it. Yup it does fill up, the float valve moves up and the system stops filling, however the water continues to rise and gets to the overflow pipe and drains into the bowl.

I am not sure what is causing it. How do I fix this. Right now I have turned off the bloody source pipe so it wont keep running but its not a solution.

sounds like it isn't quite shutting off all the way.

I would try flushing then manually lifting the float to see if you can make it shut off.

With the tank empty you should be able to see if it is still leaking or if it shuts off completely.

If it isn't leaking then I would bend the float arm downward a little so it shuts off sooner.

I'm no plumber but that's what I would try if it happened to me.

even if you have to replace the entire assembly it isn't usually very expensive or difficult to do.

You have a leaky flush valve.

Replace with a new one and clean the seat.  No, not that seat, the flush valve seat, silly!

$5 or so and you're leak-free.  Well, your toilet is anyhow.

Yea, whole tank kits are cheap and easy to install.. Hot Lowes or the local hardware and buy a kit 

The flapper valve is workign fine. Its not leaking through that. Its leaking through the overflow tube on the top. The tank fills and then it stops filling as the valve moves up but water still flows in since its filling up and outputs out of the overflow tube.

I will run another test on the fill valve.

I'm not too technical, but I know how to fix 'em...  the first statement leads me to believe that the rubber ball/flap that covers the large hole in the tank is leaking.

If that's the case, go to the hardware store and purchase the RED fluidmaster flap.  Those aren't made too hard so the pressure from the water above it will be able to create a good seal.

There is a way to adjust the bobber (floaty thing) so it shuts off the water valve earlier. I'm pretty sure it required turning a screw near where it hinges. You'll have to look at it to see which direction to turn it. I had this exact same problem and that's how I fixed it. 

Flapper that acually does the flushin or just needs to be adjusted. Possiblity.

ahhh a shitty situation Eh?

Tussy knows what the problem is.  There's a float, either on the end of a rod that goes across the tank (old style) or a hockey puck shaped float on the vertical shaft on the left side of the tank. (newer type)  That float has to be adjusted so it will rise enough to shut the fill valve off.  If it doesn't, or if the fill valve won't shut off, you will have the problem you describe.

Is it a flushmaster fill valve or the old ballcock? Sounds like a flushmaster, replace it is one oprion the other one is pick up a new diaphragm for the existing flush master, turn the supply line off, pop the top off the flush master and replace the 35cent rubber diaphragm and move on with life.

Its a flushmaster hockey puck type. I am going to see where i can get that fix for it. It seems to be shutting off alright but I think the diaphram or whatever the 35 cent thing has gone bad.

Manjul

Is it filling up too much and over flowing? If so you need to lower your ballast, the big bobber that moves up and down the shaft. There is a way to adjust it. If you take some pics we can help better.

If you wrench on your GS you should be able to figure this out 

Quote from: bill14224 on September 20, 2009, 07:32:18 PM
Tussy knows what the problem is.  There's a float, either on the end of a rod that goes across the tank (old style) or a hockey puck shaped float on the vertical shaft on the left side of the tank. (newer type)  That float has to be adjusted so it will rise enough to shut the fill valve off.  If it doesn't, or if the fill valve won't shut off, you will have the problem you describe.

Bingo

http://www.antonline.com/p_242-GP_345450.htm

Images of the problem

http://officespace.dyndns.org:8080/ssyada/IMG_0421.jpg

http://officespace.dyndns.org:8080/ssyada/IMG_0422.jpg

http://officespace.dyndns.org:8080/ssyada/IMG_0423.jpg

 You didnt fix it yet?

Just buy a tank kit they are CHEAP and EASY to install

In your pic... The part that should float up to the top and shut off the water is either set too low or broken.. Yours appears to be under water

I was out of town so i didnt fix it. I turned off the main.

Anyway the ball does float up and it does stop filling from the bottom of the tube. But then the water keeps rising and I dont know where its filling from. I cant find the source.

you need to determine if the float level is set incorrectly or if the valve is leaking.

to check this you can:

1. hold the float arm in the up/off position with your hand

2. flush toilet while still holding arm up

3. see if water fills the tank or not

If the water is still flowing while you are holding up the float arm then the valve is leaking and you need to replace it.

If the water stays shutoff as long as you hold the arm up then the float level is set wrong and you can simply adjust it.