Leaking toilet

I was told by the guy in Home Depot that this would drive me crazy. The water supply to the toilet tank continuously runs. It's a Kohler so I went to the local plumbing supply place and replaced the "flapper" with a new one. Still runs. I went to Home Depot and bought the universal flapper that mentions Kohler as one of the toilets that it fits. Water continues to run. I've tried running my finger over the rim of the bottom of the tank which the flapper closes over (I'm not sure what you call that part) and it appears smooth. Help. I dream of losing thousands of gallons of water a year. Thanks. jesseboy.

 

jesseboy, Welcome to the DIY Forums.
You said the water supply continues to run. Then you replaced the flapper. Is the water running into the bowl?
Need a little clarification as to where the water is leaking from.Turn off the water supply valve under the toilet.Let it sit 5 minutes. Is water still going to the bowl?(running down the sides). If so, it's the flapper.
If it is no longer running out of the tank to the bowl then it is the toilet supply mechanism. Do you have a ball float or is the water level controlled by something on the inlet tube? If you have a ball float, try lifting it with the water supply on.If it shuts off, adjust the arm (should be a screw to adjust it) Next, check the plastic tube that should be going into the overflow tube. Does it continually run water? May have to replace the supply mech. Make sure it is not just water running over into the overflow pipe. If it is, again adjust the inlet or ball float to the proper water level. Good luck and post back using the reply button at the bottom of this post. It will bring your post back up to the top of the forum.