My Ultimaker s3 won't extrude

[azscs 0]

I have a problem with my ultimaker s3, extrusion does not work on the 2nd printer core, I have tried loading and unloading both the printing core and the PLA material but it i still have a problem of it not printing, can anyone suggest something

[MariMakes 208]

Hey @azscs,

 

Welcome to the Ultimaker Community 🎉

 

A picture of a video might help here

 

I have a bunch of things you can try. 

1. Check if your filament is 2.85 instead of 1.75

2. Perform a print core cleaning procedure
3. Check if your extruder lever at the back is moved down
4. Check if the extruder tension is correct

5. Make sure that your filament is dry enough to print
6. Check your filament if you don't have any grinding
7. Check your feeder if there is nothing stuck in the filament.