Excessive amount of burnt black crust forming on the nozzle only when printing with PVA

[TheMainMan 0]

Which settings in Cura need to be changed in order to prevent an excessive amount of burnt black crust forming on the nozzle when printing with PVA? I am using an Ultimaker S3, and only have this buildup of black debris form when printing with PVA.

 

How can we fix this issue without causing adhesion issues etc.?

[Slashee_the_Cow 269]

As someone who has never printed PVA, I can somewhat confidently say that either you have it too hot or that you have it too hot for your flow rate. @gr5 might be around here somewhere and can possibly give you a better answer.

[Dustin 130]

Sounds like the pva is wet.
https://support.ultimaker.com/s/article/1667337600656

[Slashee_the_Cow 269]

@Dustin You need to wear a bell or something so I know when someone who knows what they're talking about is around so I don't have to take a stab in the dark (or anywhere else).