If your toilet doesn't flush as well as it used to, there's a good chance that lime deposits are building up in the rinse holes and slowing water flow. Removing the lime should fix the problem.
By the DIY experts of The Family Handyman Magazine:April 2001
Clean the rinse holes.
Seal the rinse holes.
Remove lime deposits.
If your toilet worked well in the past and
you live in an area with hard water,
chances are the rinse holes around the
bottom of the rim have become clogged
with lime deposits. Clear rinse and siphon
holes are crucial for complete flushing
action. Even though the water from the
tank will eventually find its way into the
bowl, high water volume on the first surge
is important for good flushing. There has
to be a “critical mass” of water for solids
to be flushed.
As a first step, ream out the rinse holes with a bent coat hanger
(Photo A). To do a thorough job, dry the bottom of the rim, then roll
up paper towel “ropes” and seal them against the bottom of the rinse
holes with plumber's putty pushed against the bottom of the rim
(Photo B). Then seal the siphon jet hole with another glob of putty
and pour a bottle of lime remover into the overflow pipe (Photo C).
Let it sit for at least eight hours to allow the lime remover to dissolve
deposits. Remove everything and flush the toilet several times.
Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.
You may want rubber gloves
Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.
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