How do you fix a whistling toilet?

My toilet emits a high-pitched whistle or squeal when flushed.  This just started two weeks ago.  Of course, when the plumber was here, it didn't make the sound.

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iceng11 days ago

You do not specify if it whistles during the flush or during the refill of the tank ?

jbass012706 (author)  iceng11 days ago
During the refill.

Try changing the valve turns that feeds the toilet water so that the pressure of water to the tank is changed during the refill.

jbass012706 (author)  iceng10 days ago

it worked! Thank you!

Pleased for you, thanks for the BA :-)

Invite the plummer for tea.

Sounds like calcium buildup in the refill valve.

Clean the refill valve with vinegar or CLR.

jbass012706 (author)  Josehf Murchison10 days ago

thanks for the advice. I adjusted the flow of water coming into the refill tank, and that worked. If it starts up again, I'll clean the valves with vinegar.