Hi, I recently replaced a washer on my hot water faucet and now when running the hot and cold water to shower etc. both run for a bit of time and then I hear a thunk noise (loud enough to hear above the noise of water running) and the hot water will drop off as if it is turned off. I then turn on more and the water runs with no problem. This is constant every time I use it. Any ideas. I believe my cold water slows down also but cannot be sure. I have two handle faucet with a pull up button (for shower) on spout. Sometimes the water after turning it up will come out of the faucet head alittle as if the water is pushing out where ever it can. Thank you for any help you can give me.
Sound like you have a bad anti-scald valve. Generally you need to replace the entire tub/shower valve, but some manufactures design theirs with a replaceble anti-scald unit.
something is obstructing the flow of water... you prolly need to replace the seat or washers....or if the fixture is really old it might have a calcium buildup in it....if so buy a new faucet the sound is actually coming from the pipe inside you wall knocking against the 2x4....the sudden pressure buildup from the obstruction makes the pipe rattle....might sound horrible but odds are it wont break anything
a rubber washer can warm up with hot water and swell which shuts the water off. That usually means you have the wrong washer in there. since u already threw the old one away lots of luck.
Is it possible that part of the old rubber washer is still in the faucet? I had something similar happen to me once. The culprit turned out to be a valve. Someone had installed a basin shutoff (the little ones with the oval handles) as an isolation valve on the water heater (I rent). The rubber seal inside had torn loose and would intermittently stop the flow of my hot water. Drove me absolutely bonkers until I found it. G'luck!
