I have some issues with my Rep2 since some time, the extrusion stops
I can load filament, and it extrudes but when I run a print it quickly stops extruding

My impression is that it could be a heat problem, maybe my fan doesn't cool enough and the metal coupler is getting too hot, getting the filament too soft and making the extruder deforming the filament and stopping extrusion, but maybe this is another thing

I have a delrin extruder. (Note that it worked before and now I can't do anything with it)

Any idea?

Thanks :-)