In my machine, I experience that kind of noise.
What I found out is that the wheel is not biting on the filament and wheel is getting gunk too.
Cleaned it and cut the filament that have been chewed, but still no luck, it's not coming out and making that same noise.
Did my research from Soliforum, and what I found out that majority is I have something blocking inside the extruder tip.
Took out the extruder tip with a small adjustable wrench, then turn ON to heat up the extruder.
In the picture, you will see as how much was the black filament that didn't come out before and I see some debris that looks like some oil gunk.
And the extruder tip, I put on a small container and diluted with acetone to melt and for me to easily remove any gunk inside.
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