Low toilet water level in bowl

How is water level inside your holding tank? Too much water in the holding tank may cause this problem.

Ken

Opportunities are never lost. The other fellow takes those you miss.

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Most of the time, a vent problem. If the toilet gurgles up a storm on flushing and ends up low it's almost certainly a vent problem. In the rare case that things flush fine and fill normally, but end up low later the possibilities are a crack in the toilet, or some gunk buildup that's acting like a wick to drain the siphon.

An often overlooked cause is the tank ballcock refill tube.

It's a 1/4" tube from the fill valve into the flush valve overflow standpipe. As the tank is refilling, the tube runs a jet of water into the overflow to refill the bowl.

Jim