Non stop pooping, after fail print or print from local file on k1

Flagship K Series Creality Flagship K1 & K1C
1

Here’s a clean, polished English forum post including your CFS note and a short dyslexia disclaimer at the end.

You can copy‑paste this directly.

Forum Post: Creality K1 “Non‑Stop Pooping” After Failed Prints / Local Files

Title: Creality K1 keeps “non‑stop pooping” filament after failed prints or when starting from local file

Post: Hi everyone, I’m having a serious issue with my Creality K1 and I’m hoping someone here has seen this before.

Whenever I get a failed print, or when I start a print from local storage, the printer begins what I call non‑stop pooping. The extruder moves back and forth over the purge area like it’s going to the “toilet bowl”, poops a bit, moves away, then comes back and poops again. It repeats this cycle endlessly.

Here’s what happens:

  • Extruder goes back and forth over the purge area

  • It extrudes small blobs or long strings repeatedly

  • It stops for a moment, moves out, then returns and starts pooping again

  • I cannot stop it using Stop, Retract, the app, PC, or web interface

  • The only way to stop it is to turn off the printer with the rear power switch

  • If I don’t manually move the print head to the center of the bed, it tries to destroy the purge bowl

  • One time it extruded around 400 grams of filament before I could shut it off

  • It behaves like it wants to empty the entire spool

This happens every single time after:

  • A failed print

  • Starting a print from local files

  • No G‑code shows any extrude command

  • The extruder simply starts extruding on its own and never stops

I also have CFS, so I don’t always have the energy to troubleshoot deeply. Has anyone experienced this? Is it a firmware bug, a stuck motion buffer, or a corrupted job queue inside the K1?

Any tips or fixes would be greatly appreciated.

Kind regards, Stålt – frustrated Creality K1 owner

(Short note: I have dyslexia and used Microsoft Copilot to help write this post.)

2

I don’t have a fix for it but I can sympathize with you as mine was doing the same!

since upgrading to the CFS system I’ve had nothing but issues & my machine currently just sits & collects dust as it doesn’t work :face_with_peeking_eye:

3

In the settings, do you have automatic filament change with same color enabled?

I turned it off and had all kinds of strange behavior. It returned to normal after reactivating this setting.

With automatic filament change activated, the only time it will continue to purge is after a spool runs out and triggers the toolhead runout sensor. It will purge the remaining filament and automatically load another loaded spool roll or ask you to load a new spool if it doesn’t detect the same color loaded.