Gaggia Classic Pro: Troubleshooting Leaks

by Whole Latte Love 1 min read Updated: September 18, 2025

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Depending on where exactly the leak is coming from, there will be different causes for that leak. If the leak is happening where the red arrow indicates in the picture below, it will likely mean a portafilter fitment issue, or that the group head gasket needs to be replaced. If the leak is happening where the blue arrow indicates, the leak is coming from inside your machine.