Air in fuel lines (Renault kangoo 1.5 DCI)

Hello newbie here,

I have recently bought my first van a nice little Renault Kangoo, 1.5 DCI, 65 BHP and it is Ex British Gas.

The problem is that i have noticed some air bubbles in my fuel lines it is not cosign me to lose power or the engine to cut out but its a bit worrying because i have heard it can cause serous problems.

Any advice would be greatly appreciated.

Thanks James

Air in fuel lines (Renault kangoo 1.5 DCI)