I have a toilet i replaced in a downstairs bathroom that no one uses (no one lives downstairs and rarely goes down there). This is a three floor house and just me and my brother.
It continually slowly flushes where it seems like there is a slow clog. I go down there with a plunger and clear it to where it flushes normally. We leave it alone a week and go to flush it and it slowly flushes ( water fills the bowl and slowly drains) after that. I have used a home depot snake and made sure the toilet is cleared as far as the snake goes (4ish feet maybe).
I've used the restroom after clearing it to make sure it works and it works fine after that for about a week.
I am at a loss for what I can try next and nothing seems to continually clog it.
What could possible be causing this? Googling hasn't given me any answers so maybe someone on here as experienced this? House was built in 1968.