Toilets, Sinks, Showers, Tubs and Disposals - hammering toilet

Howdy Folks , several weeks ago I replaced the fill shut off valve in the toilet , all was good , an then several days later , When you flush the toilet just as the water shuts off - It gives out a loud bangm I assume thats the shut off seat slamming down ???? can it be adjusted, or Iam I going to have to replace it again ???? Thanks ,,,,,,,,,,,,,oh also the 2 bolts at the bottom of the toilet, That holda it to the floor , to replce them Do I have to it up off the floor , or can I just replace them in the lil slots at the base of the toilet ???? ,,,,,,,,,,,,,,Thanks again , have a good day,,,,,,,,,,,JIM

The "bang" is most likely caused by too high water pressure.

Buy a cheap gauge at any big box or decent hardware store for under $15. Hook it to a hose bib or buy an adapter to put it on the kitchen faucet.

The bolts need the nuts removed, toilet pulled, then you can remove and replace the bolts. They are most likely, tee headed bolts, that slide in slots on the flange. There are studs made that screw directly into wood or concrete that are used very seldom, on toilets. These usually will break off in concrete on attempts for removal.

good luck...