Liquid Coffee Down the Drain line (roof, toilet, vents, flush)

[KozzyJoe]

How Come?
My toilet is fine. A good solid flush.
However, if I pour a third of a cup of old Coffe (liquid only) in the toilet I get a poor flush. Whether I flush right away or wait, I get a weak, half flush. Next flush takes care of business.
How Come?

[need4speed2012]

A slow or weak flush often indicates that a clog is forming in your toilet drain, the liquid coffee has nothing to do with this.

[Billy_J]

And if you pour a third of a cup of water or some other liquid into the toilet, what happens?

I suspect you are raising the water level in the bowl, so does not have anything to do with which liquid is poured in.

The problem could be a clogged vent. Check the sewer vents on your roof to be sure they are clear. Maybe snake them. With that problem, when you flush, the water in the bowl gets sucked into the sewer after flushing, so the final water level in the bowl is lower than it should be. A siphon type action - an open vent prevents this.

[harry chickpea]

As long as you have all that time on your hands...

...try Maxwell House. Should be good to the last drop.

[nissan]

Lol trolls.