Gurgling noise though Magna Clean

[Tally101]

I had a radiator replaced a few days ago and now I hear gurgling through the Magna Clean like water going through it , is this air in the system ? I have rads with autoimmune vents in them , will this be enough to clear the air
Thanks

 

[CountryFan]

Yes, sounds like trapped air. Is there a vent on top of the magnaclean? If yes, just vent it.

 

[Tally101]

Tried that and water comes out but it still sounds like air going through the magna clean

 

[Johntheo5]

Are these Aladdin vents? ( autoimmune vents ) anf if so any air venting?, can you open a manual vent on the other side, especially on the new rad.