Why is there no smoke out of the mouthpiece or being pulled into the unit?
The upstems on your Stündenglass are clogged or the valve/bowl intake is clogged. Please follow steps in the Quick Clean or Deep Cleaning to clean your upstems and valve. If that is not the issue, then the body may be on backwards. The outlet hole should be on the mouthpiece side. See: Basic Troubleshooting
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