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Jonny69
Colonel_of_Truth
Anyone had this happen and have an idea of the cause? When I start pulling a shot i'll get liquid through the spout then it'll slow down to a dribble as if I ground too fine. Coarsening up the grind helps a bit but you can see from the pic I'm already getting too coarse for espresso and getting weak extraction. When I take the portafilter out it looks like the puck has tried to climb out of the sides... in the pic it's a ~15g dose in a silvia basket and it's reached the top of the basket when it should be about halfway down.
My hunch is that it's the gasket not giving a perfect seal. When I backflushed a week ago I had some leak from there until I cranked the portafilter in really tight. I only replaced it 3 months ago so maybe it's a dud one. I also pulled the solenoid valve apart but it was surprisingly clean for such an old machine.