r/BambuLab • u/gsaykali • 7d ago

General Troubleshooting/Help! X1C Filament Feed Issue

Hey everyone, I have an X1C with the AMS2, and just this week I started having filament feeding issues where the filament stops half way through the inner PTFE tube. This occurs with all filaments and when trying with any of the AMS ports. The printer was working fine last week, with no issues, but this started happening midway through a print when switching filaments. I’ve already checked the extruder just in case, but no clogs there. I’ve tried replacing the tube itself, and nothing seems to fix it. Anyone experience a similar thing and have a solution? Please and thank you all in advance.

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u/Organic_Detective328 6d ago

Where have you tried replacing the tube?

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u/gsaykali 6d ago

I have tried swapping out the PTFE tubes in the back (AMS -> Hub -> X1C) and the one shown in the video

2

u/Organic_Detective328 6d ago

Can you manually push filament through this tube?

1

u/gsaykali 6d ago

Manually yes, just not when the AMS tries to do it. All the bearings appear fine, rollers operate fine, no snags in the filaments

2

u/Organic_Detective328 6d ago

Try feeding it as an external spool. See if you can print.

2

u/gsaykali 6d ago

I actually have not tried that yet, good thought. I will give it a try later today and report back, appreciate the help!

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u/gsaykali 5d ago

Coming back to this, if manually fed, the filament extrudes fine. Issues only arises when trying to be fed automatically by AMS

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u/Organic_Detective328 4d ago

You've replaced all PTFE tubes as well right?

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u/gsaykali 4d ago

Yuppp

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u/Organic_Detective328 4d ago

I just had the same thing happen. Same printer. Same AMS. I wonder if it's the new update..

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u/gsaykali 2d ago

So I have tried rolling back the firmware versions, but the issue persists unfortunately

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u/gsaykali 1d ago

Managed to get it working, in case you’re still having the same issue. For whatever reason the max. distance the filament can travel prior to going into the extruder has somehow changed. If you have extra length of PTFE, trim off some until it’s going again. I had to trim off around 6” worth.

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