Remaining filament at the outlet of the hotend

Ender Series Creality Ender-3 V3 KE/SE
1

Hello,
Since I replaced the original hotend on my Ender 3 V3 KE with a ceramic hotend, I’ve been having a problem with filament extrusion; a piece of filament always remains at the outlet of the igniter.
I have to disassemble the extruder and the small PTFE tube to remove the remaining piece of filament.
Did I install something incorrectly?

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Philippe

2

Hi
From the picture I can see you are missing the short length of PTFE tubing between the hotend and the extruder mechanism.
If you bought a Creality replacement it should have come with 2 PTFE tubes, one for the SE and one for the KE.
Fit the correct tube and your problems will be solved.

Good luck

3

Hi,
I removed the 28mm tube to take the photo.
I did use the tube for the KE; I just checked that the one for the SE was still in its bag.

Philippe.

4

Hi
OK, if the tube is fitted then check your hotend fan, is it running whilst printing?
I have a SE with the Ceramic hotend and have upgraded to a Noctua NF-A4X10 fan with a printed reduction shroud.
This could be heat creep up the unicorn nozzle causing the filament to melt too high up.