A friend of mine has this for 8 months, he is not really active here. Today he showed me he has the same problem others had with water coming out from the top part of the grouphead/spring (not from the tiny pump comutator/switch).
I told him how to take out everything and check. I asked for pictures inside the bore, and I can clearly see some marks from the gaskets and even a bit of metal scraping on the bore at the bottom. My believes are that 2 springs produce a lot of force that leads to a lot of twisting. That twisting will make the piston go closer or further in spot away from the bore, this means if the gaskets are not a ultra tight fit it will start leaking at some point, the failure is in the twist, and ACS is not to blame for it, as they already try to find a solution to twisting, but the producer of the group is to blame for, remember the interior and group is not identical build to LSM, so letâs leave that stone unturned and not talk about how LSM group was fine for 10000 years, we donât care.
My friend was always curious about low pressure turbo shots, and he managed to do as I told him, to meassure the lenght of the shaft from itâs tip to the locking nut, then take out one spring and put it back together to how it was. The gasket slots were cleaned, the gaskets greased with siliconic grease and everything works now with no leaks. I told him to let the old gaskets there to test a theory. So if you manage to fix the twist, or come up with a solution to reset the springs assembly forces every now and then you might not end up having this problem.
All the best, and hope you have great espresso.
