When I turn on the hot water of my bathroom faucet it runs for about a second or 2 normally and then you hear a clunk in the pipes and the pressure drops way down and I only get a trickle. If I turn the handle slowly I can keep the pressure on the medium side for about 10 seconds then it clunks and drops to a trickle. I have switched the valves stems and get same problem. I am trying to sell my home and would like to try and get this fixed.
Any help is greatly appreciated.
Thanks.