Ken Lim
: Ken…Sounds like you have a loose washer in the supply stop to the offending basin tap.some : times this can be dealt with by simply opening the stop all the way (the stop is located under the vanity or cabinet, and has a tube running up to the tap.) : If opening it all the way up doesnt silence the machine gun noises, replace the washer and bibb screw. Lots of luck..Bud… : Suncoast Plumbing Inc. : Sunny Florida.: : What could be causing a very loud thumping noise when : : turning on the taps on a hand basin? This problem does : : not happen with any other taps in the house.
