01-24-2008, 06:39 PM
bowl level dropping is odd.
I'd be concerned another device is pulling it down due to suction ?
Can you go up on the roof and shine a light down the vent making sure there is no blockage on the vent end ?
Only thing that should affect bowl level is barometric pressure.
40 years of just my own toilet repairs , I'm not a pro plumber.
Or maybe a bowl crack.
Every waste side blockage I've encountered the bowl almost filled to the top while flushing.
That can be anything from a wad of paper towels to legos.
Except once at work we had bowl overflowing problems that was not any pipes in our building. A few months later every building's toilet on the street exploded backwards (what a stink) and everything's been fine since.
I'd be concerned another device is pulling it down due to suction ?
Can you go up on the roof and shine a light down the vent making sure there is no blockage on the vent end ?
Only thing that should affect bowl level is barometric pressure.
40 years of just my own toilet repairs , I'm not a pro plumber.
Or maybe a bowl crack.
Every waste side blockage I've encountered the bowl almost filled to the top while flushing.
That can be anything from a wad of paper towels to legos.
Except once at work we had bowl overflowing problems that was not any pipes in our building. A few months later every building's toilet on the street exploded backwards (what a stink) and everything's been fine since.