Nescafé Dolce Gusto Air in hydraulic circuit or partial blockage

Machine makes gurgling or sputtering noises during brew

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Possible Causes

Low water level drawing air, Loose tank seating, Scale in thermoblock, Blocked injector

How to Fix / Troubleshooting

Safety: Hot water may sputter; keep hands clear of the spout.

  • Refill tank: Ensure the water tank is at least half full and properly seated.
  • Bleed air: Run a full tank of water (no capsules) through the machine, alternating hot and cold, to purge air.
  • Clean injector and descale: Clear the injector needle and perform a descaling cycle.

Occasional gurgling is normal, but persistent sputtering after cleaning may indicate a developing blockage that needs professional attention.

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Repair Difficulty

Easy 2/5

Required Part

Thermoblock Heater
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