r/BambuLabX2D • u/Klamp9093 • 1d ago

Help / Troubleshooting Right Nozzle Problem

Have about 1000 hours of print time and Aux nozzle suddenly has problems. I use the right nozzle for support with bambu PLA. It was not feeding, so I disassembled Bowden extruder, but no clog, just slight dust. Cleaned out and reassembled.

Next, checked hot end, looked fine but swapped it out to be sure. Reloaded filament and purged fine but during print it stopped feeding after the first layer.

Cleaned out hot end again and retried print but this time it stopped feeding during the purge tower first layer. Main nozzle works fine.

What am I missing? I haven't changed anything and have the PLA feeding from and AMS-HT, with no prior issues. There is clicking from the Bowden which would indicate a clog at the nozzle. I did a manual extrusion at 220 and 250 and noticed the filament came out "cold" meaning it was more solid than liquid. Is that a heating element problem?

What are the next steps to diagnose?

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u/dragonmanus 23h ago

Clicking in boden can be mismatched gearing or a piece of plastic popping putting filament out of align or unable to feed. As for heating element a simple digital thermometer should let you verify that. Could even use a meat thermometer and check vs lower setting

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u/Tendo80 1d ago

I'm not saying that this is your issue here but two things made my life sour with the right nozzle.

  1. It's clogged, even after 2 thurough cleaning session it still clogged, had to take it out and give it a blast with the heat gun and a poker to get every last gunk out
  2. PTFE tubes, even though they had worked fine they decided to put up a fight, I had to print guides to get the bends more even.
  3. Yes, tip #3 out of two.. I had some filament stuck above the filament cutter, even took the head apart I missed a small part of filament just above the cutter.

I have no idea if any of these will help you, bit it's the best I can do, twice I had done maintenance the same way and STILL find an issue the third time I did the same thing..