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NO - you would have to change valve out
depending on your spout diverter if its a valve or is it on the spout it self, if the diverter is on the spout then your diverter is not letting full flow of water out of the spout and its putting enough pressure to allow the water out of the shower head, I had this problem before and if you change the spout it should fix the problem. If you have a 3 way valve which is on the wall then i would suggest replaceing the parts in that valve if possible other wise change out the divert valve. If your broke like me and want a cheap fix then put either a water flow resistor or a shutoff right before your shower head.
it blocks the water from coming out of the spout & redirects it to a different exit point
Put a wash cloth or similar over the end and use a pipe wrench or slip joint pliers. The cloth keeps the wrench from scratching the surface of the spout.
Clean the diverter as sediment may be causing the problem
the diverter knob is either stripped or the diverter itself itself may be broken turn the water supply off take the knob off a carefully remove the diverter shaft if the flapper is missing look inside the housing for the broken piece then take the name and model down to home depot or similar home store and someone will be able to match it up,. but my money is on the stripped knob
A hole has developed in the spout or where it screws onto the pipe needs more Teflon tape or joint compound to seal the threads.
Most likely you have a bad diverter valve. If you have a shower valve, turn the house water off, remove the diverter handle and the escutcheon plate. Remove the diverter valve-many different ways- clips, screws etc-check to see it it is clogged, , washer or cartridge damaged etc. Go to a plumbing supply house and get a repair kit or a new valve, re-install, turn on the water and check for leaks before putting back the plate. If you only have a lift handle on the tub spigot, the lift handle is stuck or the diverter plate is stuck. Screw off the old spout, get a replacement and re-install after taping the joint. These can be changed without turning off the water. Sometimes they are so corroded you will have to CAREFULLY saw through the spout and split it off the tub stubuot
Sounds like you got a bad one. Maybe you should take it back. Long story short, since I've spent the entire day at different hardware stores, and websites looking for the answer, and figured it out... before taking the advice of so many and replacing the entire spout.. The little black rubber washer is the value. When water pressure pushes against the hole, it actually pushes this black valve out just enough to stop the water from flowing, and the water flows to the shower head. If water is pouring out, try cleaning this black valve with toothpaste, as someone on another website recommended, and reinsert the valve. But don't push it all the way in. Water need to get behind this valve in order to fuction properly. Hope this answers the question...
Depending where is has broken off, depends to what extent of how much you will have to replace, but worse case scenario is, inside there is a cartridge that has a little lever that the diverter handle attaches too. This whole cartridge needs to be replaced. Depending on the make, it can be costly.
Your tub spout isn't fully diverting the water to the shower head and a very small amount is leaking through. The smaller the hole the water has to exit, the greater the pressure. Replace the tub spout, usually costs less than 20 dollars.
It will depend on the type of faucet if it is a three handle or has a popup in the spout popup in the spout will be the easiest to repair do so just by replacing with a new spout if it is a three handle you will have toremove the center handle and then remove the stem there will be a washer of some type replace the washer and put back together and try.