Smoker makes loud popping, banging, or metallic expansion noises during heating and cooling.

Safety first: Allow the smoker to cool before tightening any hardware.

• Check rack fit: Ensure all racks are properly seated in their supports and not flexing or binding against the cabinet walls.
• Tighten hardware: Inspect internal brackets, element mounting clips, and exterior panel screws. Tighten any loose fasteners.
• Isolate panels: If two panels are rubbing, insert a small high-temperature spacer or adjust the panel alignment to reduce contact.
• Monitor: Some mild popping from thermal expansion is normal, but very loud or new noises after a repair may indicate a mounting issue that should be corrected.