Fixing Water-Running Toilet

The Kohler Highline Classic toilet I installed in 2018 has minor issues here and there, particularly its canister flushing system. The latest issue was that the water kept running and would not stop. From searching YouTube, my initial fix was to replace the flush-valve seal from the canister. That didn’t resolve the problem.

When I opened up the cap on the adjustable fill valve, I suspected the fill-valve seal had worned out and it turned out to be the culprit. I replace the seal and the problem went away. The fill-valve seal was $4. I could have reused the old flush-valve seal and saved 8 bucks, but I just left the new one in.

I am not fond of the canister flushing system and thinking of replacing it, but I am starting to see how it works. It’s not bad.