Quote Originally Posted by Brian_Krassenstein View Post
What makes you think it's because of the PLA. Sounds odd that a different material would make it make a sound. Is your build plate aligned correctly? Is there anything on the rods for the X and Y axes?
It didn't do it when I was using ABS.

It's because of heat creeping up the barrel and melting the PLA prematurely which causes it to swell and inevitably block the tube.