We are having an issue with one of our toilets "spitting" water out of the toilet when it is flushed. The toilet bowl itself also doesn't seem to have much water at all sitting in it. When we look in back of toilet, the tank is full of water - so not sure why there isn't more water in the bowl itself. Could this be an easy fix/adjustment?
When re-filling the tank after a flush, some water is routed thru a small tube coming from the fill valve/float into the overflow tube that refills the bowl. Check to see that it's not broken or come loose from the over-flow tube. If not broken or detached, with the lid off the tank, flush the toilet and see if you have any water coming out of that tube (it's a small tube, less than 1/4" ). If no water is coming out during the re-fill of the tank, something is wrong with your fill valve/float. But not to worry, for most toilets (unless you have a fancy one with a dual flush function), toilet tank guts are very inexpensive, about $20 or so and pretty easy to replace. One of my sons had a running toilet and needed to have the guts replaced. He's not very "handy" at all, but I made him do it with my guidance just to give him confidence in home repair. He had no problems doing it all, piece of cake.
If you have a hard pipe from the valve on the wall, this would be a good time to replace it with a braided steel riser....much easier to deal with than hard pipe and compression fittings!
My toilet does this, I find that holding the lever down after flushing and letting the bowl fill up to an acceptable level solves the symptom.
Aside from dealing the the symptom a root cause can be one of several things:
- If the plumbing stack is not vented properly then that could cause a siphoning effect which drains your toilet bowl
- An old toilet simply doesn't flush as well as a modern one
- If you have a water-saving contraption installed in your refill tank then it could be interfering with "normal" flushing expectations
I'm sure there are more expert plumbers around here that can shine a light on other root causes :-)