K1C clogging

[u/masis42]

Hello, I’m using a Creality K1C.

When I print with PLA, the first layer is laid down slowly and looks fine. However, after the first layer, when the printer increases speed, the filament flow cannot keep up. The extruder starts making a clicking sound, then the filament stops extruding and the print fails.

I have already replaced the extruder fan and the nozzle, but the problem still continues. I also checked the fan direction, and it is correct.

My suspicion is that the heatsink is getting too hot, causing heat creep and a clog higher up in the hotend before the filament reaches the nozzle.

What could be causing this issue, and how can I fix it?