Why is my coffee machine making noises?
Unusual noises from a manual Italian coffee machines with an E61 group is usually a sign of the group running dry. ie, without enough lubricant.
If you are handy and willing, take a look on YouTube and you will find plenty of step-by-step videos that show you how to disassemble and re-lubricate your espresso machine’s E61 group. All you will need are some basic tools and some food safe grease.
If you don’t want to get your hands dirty take it to a local Italian coffee machine technician for a quick, basic service. It won’t cost much.
Why does this sometimes happen earlier than expected? A simple reason. Too much back flushing with back flush detergent. Back flush detergent dissolves not only coffee oils, it also dissolves the good lubricating grease in the E61 group.
For tips on how to maintain your machine without over-maintaining see my Italian coffee machine Maintenance Guide