Sometimes when I go to turn on the kitchen faucet it will only have a small trickle, not the usual high pressure water flow. I usually go to the bathroom and turn on the sink faucet there and the kitchen faucet starts working again...or at least it used to. That trick used to work consistently but now only works randomly. What's strange is that this is the only faucet in the house I have this issue with. Usually when this occurs I notice the faucet makes a strange thud sound ever so slightly like a heavy firewood log landing on the grass. It sounds like it's caused by air. House: two water heaters. 3 toilets, 2 showers, one bath, one kitchen, washer, 2-3 outdoor spigots.