On 1/12/2022 at 9:14 PM, siteunseen said:

Since your curiousity is up and running as it should be, you should find out what is going on with the PCV pipe coming out of the block. It's plugged at the balance tube so it should be plugged there too for now. I would reconnect it to it's original configuration if I were you.

Maybe these pictures will help.

Your current PCV valve is plugged...

This shows where it should go to the block...

This hose should go to your air cleaner housing to complete the circuit of Positive Crankcase Ventalation. Simply just to return any unused air to the carbs to be burned instead of released to the atmosphere. Pollution stuff. 

Thanks I know, I have just moved the airfilter.

Thanks for answering and I have dismantled all what was intended to make a cleaner  nature, sorry.