Espresso machine leaking water?
A worn or hardened group head gasket fails to seal the portafilter, causing water to leak from the group head during brewing.
Likely causes · most likely first-
Group Head Gasket
Easy DIY Part: $5–$15 -
3-Way Solenoid Valve
Moderate DIY Part: $20–$50A faulty solenoid valve with a degraded internal seal drips water continuously through the three-way valve path.
-
Copper Connecting Pipe
Hard DIY Part: $10–$40A cracked or loose-fitting copper pipe joint inside the machine allows pressurized hot water to escape into the drip tray or base.
-
Drip Tray
Easy DIY Part: $15–$35An overflowing or cracked drip tray causes water to spill onto the counter, mimicking an internal leak.
-
Single Boiler
Hard DIY Part: $60–$150A boiler with a failed seal or pinhole corrosion leaks pressurized water internally, eventually dripping from the machine base.
See the faulty part in 3D.
Tap a highlighted part to see exactly why it fails, how to verify it's the problem, and how to replace it.
Diagnose this in 3D →