M31 Bistro LaCimbali problem


New member
May 13, 2023
Taranaki New Zealand
I have a M31 Bistro LaCimbali machine.
The machine is slow in making coffee, even though the the water pressure at the porta fill is 9.5bar.
At first I thought it might be a blocked orifice, (there is two of them) but they were both open. Orifices or restrictors for the water are about 1 mm in diameter.
It is not the coffee or grind, because I have used the same brand for years and it was working normally.
I have also back-flushed and there is nothing wrong here.
The machine is hooked up to city-water.
The machine will eventually finish, (after about 4-5 minutes) but the coffee has very little cream on top.
Hope somebody out there can put me in the right direction. (My wife is not happy in the mornings...)


Well-known member
Aug 15, 2005
Central North Carolina
Explain a bit more on it 'not being the coffee/grind as the same brand for yrs'...
Coffee changes more often than most people think due to environment, process methods, that sort of thing.