When the toilet tank and bowl are empty, we can then disconnect the water supply riser to the toilet (photos below). You'll have a small bit of water that runs out of the riser tube to the toilet, so be prepared with a cup to catch that water or with a towel to mop it up pr...
If the flapper isn't the issue, the fill valve is the other likely culprit. The tube in your toilet tank is the overflow tube. If the float is adjusted properly, the water level should stop about 1 inch below the top of that tube. You can adjust the float if the water level isn't...
Turn off the toilet's water supply and flush to empty the tank. Remove the flapper by unhooking the chain from the handle and popping the rubber tabs off the overflow tube. Get a new flapper that’s the same size as the old one. Hook the new flapper’s chain to the handle and attac...