I'm seeking some insight on a toilet problem. Searches on the internet have not matched my situation so I'm hoping someone lurking here can give me some advice.
Problem - the toilet bowl will interrmittently not fill completely after a flush.
Environment:
older 3.5 gallon flush toilet
identical toilet on opposite side of wall flushes OK, they share the same drain and I assume the same vent
the tank fills normally (at least all the times I've checked it)
I think I have ruled out the fill valve and the flapper valve (the easy things to fix).
I don't think the vent is plugged otherwise I'd think the other toilet would exhibit the same problem.
And I don't think the drain is constricted or again the other toilet would exhibit the problem.
I'm wondering if the fill holes around the top of the bowl are getting constricted (but then why is the problem intermittent??)
Any sage advice out there?
John Keith snipped-for-privacy@juno.com