Sink Making Noises Home › Forums › Public Forums › General Plumbing › Sink Making Noises This topic has 1 reply, 2 voices, and was last updated 21 years, 1 month ago by Retired plbg1. Viewing 1 reply thread Author Posts 18 Mar 2003 at 11:13 am #276462 MasterPlumbersKeymaster Does anyone know why a sink would make very rapid “thumping” noises every once and a while? Most of the time the sink works fine, but if you leave it on for long enough sometimes it makes a rapid thumping sound until you turn it off and back on. Thanks 18 Mar 2003 at 11:42 am #294204 Retired plbg1Participant Sounds like the way you say you might have a loose washer in faucet. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In