Our bathroom faucet has had a slow drip for ages, so I decide to finally fix it. (It's a one-knob faucet.)
I run the water, go underneath and turn the cold-water supply off, and the tap water suddenly turns grey for a minute -- presumably I'm dislodging a bunch of silt as I shut the supply-line. Similarly for the other hot-water supply -- it turns grey for a minute (then clears), as I shut it off.
Mildly weird: even with both supply-lines closed and waiting several minutes, there is still dripping water, whether or not I have the sink turned on. (And it still persists, more than a day later.)
Really weird: Not understanding the above symptom, I re-open the supply-lines. BUT nothing happens -- no water (beyond the drip)!
At first I thought silt might have clogged the faucet, but that wouldn't explain why it drips after shutting off the supply-lines.
I have no idea what's happened. It's like the supply-line-valves are both stuck at nearly-off? But, I really don't think anything broke inside; when first closing the valves I had to give them a firm twist by hand, but nothing too surprising, and I didn't over-tighten them after that.
Any explanations for this behavior are welcome!