I'm having a plumbing issue somewhat different from most I see posted. When I run the bath faucet, the diverter works fine and there is no leaking from the showerhead. However, when I run the shower, there is significant water flow from the bath spigot. For some reason it's worst (almost full flow) when the diverter is turned all the way to the shower side, but I can reduce it a little by setting the diverter back, to maybe two thirds of the way between bath and shower (if I move any further there is insufficient water from the showerhead). Anyone see this as well? Is it simply a case of replacing the diverter (which I've done before, when I couldn't switch flow at all) or something else?
Edit: This is a new issue, it just started in the last week or so. I replaced the diverter a couple of years ago. Since posting earlier today, I removed the diverter to have a look. Everything looks fine with the diverter, but the problem may be in the actual mixing valve that the diverter fits into. There seems to be a rubber lining of some kind in the valve (not sure what function it serves) that has a tear or hole in it. Any idea what that is? Now the rubber seems to be preventing the diverter from fitting tightly into the valve again. Thanks for any ideas anyone has.
Best Answer
Sure sounds like the diverter needs fixing or replacement.
When the diverter is closed (sending water to the showerhead), it has to handle the full supply pressure. When only closed two thirds, it sees significantly less pressure. Sounds like the force of the water, is pushing the diverter open. This allows water to flow out the tub spout, rather than being sent to the showerhead.
Depending on the make and model, you might be able to make adjustments, replace parts, or a full replacement may be required.