Masterbuilt Pellet Moisture Contamination

Pellets in hopper swell, crumble, or form clumps

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Possible Causes

High humidity or rain entering hopper, Hopper lid gasket leak, Long-term storage of pellets in hopper, Poor-quality pellets

How to Fix / Troubleshooting

Safety first: Do not attempt to burn wet pellets; they can cause jams and poor combustion.

  • 1. Remove contaminated pellets:
    • Scoop out all pellets from the hopper.
    • Vacuum remaining dust and fines.
  • 2. Inspect hopper lid:
    • Check lid gasket for damage or gaps.
    • Replace the hopper lid gasket if worn.
  • 3. Use dry storage:
    • Store pellets in sealed containers indoors.
    • Only load enough pellets for the current cook.
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Repair Difficulty

Very Easy 1/5

Required Part

Hopper Lid Gasket
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