How can I fix a toilet flapper that prevents flushing?

Check the flapper chain, seal, and tank water level. Most no-flush issues come from a stuck chain or a warped flapper. To fix it:

• Turn off water and drain the tank.
• Give the chain slight slack so it doesn’t snag.
• Clean the flapper seat to remove mineral buildup.
• Replace the flapper if cracked or swollen (match 2 in. or 3 in.).
• Refill, test, and adjust water level to the tank’s mark. We provide Toilet Repair with upfront pricing in Merrillville and Crown Point.

<br/> Updated: 2026-01-02 <br/>

Need help in Merrillville, IN? Call (219) 500-8867 or book online.

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