I am experiencing the same problems with one of my X1 Carbon printers. I have 3 printers 2 X1 carbons and 1 P1S. I run the same print files on all 3 printers using PAHT-CF. I have ran into a problem on one of my X1 carbons that I can’t seam to fix. While printing the extruder skips and can’t push filament through the hotend. seams to do ok when the nozzle is not up against the table but when there is any resistance against the nozzle it cant do it… I have replaced the following
Complete nozzles 3 different times
Extruder motor
Extruder gears
Main PCB on the back of the print head (TH board)
I’ve tried printing with AMS and from the spool holder with no success
I have ran my file that I am using for testing many times on this printer. The problem occurred after attempting a 14 hour print. I assumed the stepper driver or extruder motor started to burn out but replacing the both of them made no difference.
Any other suggestions would be greatly appreciated.