Hello, I’ve had an Ender 3 V2 Neo for approximately 2 years, and now the prints are constantly failing. I tried several ways of troubleshooting. In short, the print starts out good and it perfectly prints small calibration parts like CaliDragon, CaliCat. The table is well aligned, the filament is new, I checked for blockages, the extrusion speed and quantity are correct. I thought the problem might be the spring pressure on the extruder arm, but even after removing that little pin to reduce the pressure, the problems persist. I suspect it is a temperature problem with the machine, or the extruder. Thanks for the help!
Looks like a sharp tube bend coming out of the extruder. Most Bowden tubes come straight out then up and over to the hot end, As the z-axis increases, the filament could be harder to push.