Ok, we replaced the faucets about 2 years ago, the new one came with a sink sprayer like this one:
About a month ago, I noticed the following:
When you have the faucet on high, hot or cold, and press the sprayer button, the sprayer will spray hard at first, but then cut down to about half strength and there is a whine noise when this happens. If you let off the button and wait a few seconds, it sprays at high strength a few more seconds, but then gets weak again.
Any suggestions on this one?