What should I do if my toilet won't flush but is not clogged?

If your toilet won’t flush and the bowl isn’t clogged, check the tank parts and water supply. Most fixes are simple and take minutes.

• Make sure the shutoff valve at the wall is fully open.
• Check the handle and lift chain; remove slack or reattach.
• Inspect the flapper; replace if warped or not sealing.
• Confirm water reaches the marked fill line; adjust the float.
• Clear mineral buildup on the fill valve nozzle.
• If parts are cracked or leaking, replace them.

Updated: 2025-12-23 00:00:00

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