Lelit Elizabeth steam unstable / spluttering

Having issues with my Elizabeth today! The steam is unstable / spluttering, not every time but often.

Will try to get a good video, again it feels like some sort of air in system or something…? Any suggestions?

Without at least a video, it’s an impossible guess.

Will try to get a video, it’s not happening every time….

Resolved after fixing air lock by syringing water through the intake hose with the pump running.