Model: SodaStream Crystal 3.0
Type: CY-CQC-001
Problem: Very weak CO₂ flow, even with a new cylinder
Cause: Blocked CO₂ restrictor
Fix: Clear the tiny restrictor opening
My SodaStream Crystal 3.0 suddenly produced almost no carbonation. I replaced the Quick Connect CO₂ cylinder twice, but the problem remained.
Another clue was that after releasing the carbonation button, a small amount of CO₂ continued to flow for several seconds.
The problem turned out to be a blocked tiny CO₂ passage inside the Quick Connect assembly.
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