Extruder Not Working After Nozzle Replacemenet

Hello,

I recently changed my nozzle, as it had become too dirty. Since I changed the nozzle, however, I have no extrusion at all. I get no error messages, but when i try to replace the filament into the extruder nothing happens. I continued with a print to see if it would work then, but it just goes through the motions of printing but never extrudes!

Any ideas?

Try removing the extruder gear cover, there might be a piece of filament broken off inside. Also make sure the nozzle temperature is high enough to melt whatever kind of filament you used last.