The carbonating tube leaks CO2 when machine is not in use.
Carbonating tube leak
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Carbonating tube leak
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@jr77 Have you checked out the guide we have here on iFixit. You may find it helpful.
SodaStream Source Internal Carbonation Air Hose Replacement
If you are hearing a hissing noise coming from your SodaStream Source, the carbonation tube is leaking gas, or the carbonation bottle is leaking, use the SodaStream Source is Leaking Gas problem page to fix the leak.
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