My grill is making squeaking or clunking noises

It’s normal for your Z Grill to make some squeaking or clunking noises. The auger slowly rotates to push pellets from the hopper into the firepot. The auger is designed to be quite loose and can move forward and backward slightly, allowing it to break through longer wood pellets. (Note that the auger does not run continually; it only turns on once every two minutes to deliver pellets into the firepot.) If your wood pellets are longer than 1cm, they will make more noise in the auger as they are being broken. Ideally, your wood pellets should be less than 1cm in length.