WILDinTHEwoods
Well-known member
Think of it like this. NUT > BOLT > WASHER. The washer is a rubber gasket that seals against the seat of the faucet valve body. Turn the water off, pop the cap, unscrew it, and check the condition of the gasket and the seat. I'd guess the gasket is either folded over on one edge or ripped from over tightening.