Leaking: Causes & Fixes

Leaking usually traces back to a specific seal, gasket, or valve rather than the machine as a whole — the guides below cover the documented causes for Nespresso, Gaggia, and moka pots specifically.

Nespresso Machine Not Working: Every Fix by Error Light Real Nespresso-documented fixes for power issues, stuck capsules, brewing failures, and leaks, plus what the blinking lights actually mean on both OriginalLine and Vertuo machines.
Gaggia Espresso Machine Troubleshooting The Classic Pro's own official descaling process, filter-basket and tamp specs, group-gasket leaks, and the numbered error codes Gaggia actually publishes for its super-automatic line, sourced from Gaggia's own maintenance pages.
Moka Pot Troubleshooting A moka pot has no pump, no motor, and no 9-bar extraction curve, so almost none of the causes in our espresso-machine guides apply. Bialetti's own documentation covers leaking, stalled brews, and a genuinely different cause of bitter coffee.