Take the 2-minute tour ×  I have three toilets that all flush
slowly and incompletely. I've adjusted the chain to ensure the
flap raises completely. I've raised the float to ensure the tank
fills nice and high. Yet I have this nagging issue on all my
toilets. It often takes multiple flushes to clear simple waste
and toilet paper, never mind the "hard" stuff.  All the sinks
and tubs drain well, no issues. I'm wondering if the age of a
toilet can be a factor. All of my toilets are from the mid-
eighties. I'm getting to the point where I just want to replace
thm with some water-saving toilets but it would suck to have the
problem persist.  share|improve this question Do you live in a
hard water area? There might be water deposits clogging the
nozzles underneath the rim. I've used vinegar to clean water
deposits; lots of people on this site swear by CLR though I
don't know if it would be safe in the toilet tank... maybe turn
off the water, hold the flapper open and pour some in directly?
–  Niall C. Sep 17 '11 at