Welcome to Just Answer, I will do my best to help you solve your problem
Noises, based on someone's description, are very difficult to diagnose. Can you give me more details, like it eh pooping noise coming from inside the tank when the burner is running?
or is it more of a bang when the burner comes on?
It is poping when the burner is on and running
Ok, this is typically cause by mineral and/or sediment build up in the tank. It's not hazardous
Is there anyithing I can do make it stop?
You can try flushing the tank but if the tank is old and it's never been flushed, flushing it can hasten its demise
do you want flushing instructions?
Thanks , exit
Thanks for using Just Answer