My bathroom faucet tap quick connect leaks at the fitting, how can I fit that?
You need to push the fitting up over the nipple a little harder (you should hear a distinct "snap" or "click"). If you push it on gently, you might hear a slight click, but you haven't quite compressed the o-ring into the housing of the hose. One more push should solve the problem. And make sure your basin sink is clean enough.
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