Ender 3 V3 SE – Consistent Blockages Within 20 Minutes of Printing

Ender-3 V3 Printers
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1

I’m having a persistent issue with my Ender 3 V3 SE and I’m out of ideas.

No matter what I do, the printer now blocks within 20 minutes of starting a print. The blockage causes the filament to grind in the extruder, and the print either under-extrudes badly or stops altogether.

Here’s the history:

The first time, it blocked about halfway through a print.

The second time, it was a partial blockage.

Now it’s stop-start, and eventually stops entirely within 20 minutes of every print.

Things I’ve tried:

Replaced the nozzle (three times)

Replaced the PTFE tube from the extruder to the hotend

Confirmed proper temperature settings (PLA at 200°C)

Tried different filaments, including known good brands

Checked for obvious obstructions or loose connections

I’m wondering if it could be something in the extruder path that I’m overlooking

It’s super frustrating since it used to print fine, and now it just won’t run more than 20 minutes without jamming. If anyone has had a similar issue with the V3 SE or has any ideas, I’d be really grateful.

Thanks in advance for any suggestions!

2

Have you checked you extruder gear tension? That has caused issues like the one you described on mine.

3

Yes i have, its at the point where its just biting the filiment without it being too deep. It seems like it grinds the filiment when it cannot push it into the hot end and out the nozzle.

4

Hi
Check the operation of the hotend cooling fan.
This small fan should run all the time and they seem prone to failure, this can cause heat creep and cause the jamming you describe.

5

Ive managed to solve the issue.

For those that come across this after me and have a simular issue.

It was a small peice of melted plastic wedged between the extruder and the PTFE tube, causing the tube to squeeze the filiment.

To find it took the extruder apart and pushed wire the opposite way up the extruder housing pushing out the blockage.

Thanks for your help everyone!

6

This is a common problem with all the creality printers.
To reduce the occurrence when replacing the bowden tube

  1. Make sure that the cut is square, expecially with new tube
  2. Unscrew the gland about 1/4 turn
  3. Insert the tube
  4. Insert the locking clip
  5. Tighten the gland that 1/4 turn