So as the title states I’ve got a good amount of air bubbles coming from cp3 return . I replaced all supply lines with clear ones from tank to ficm ,to filter head . With no bubbles so I just installed a line from cp3 return to return block and have a strong amount of air bubble coming from cp3 .. Bad cp3 ???? New injectors ,fpr,hard lines ,lift pump ect. Been chasing a strong power loss but rail pressure follows real close from actual to demanded all the way to 23k but truck is lacking in power . Maybe cause cp3 is pushing air into injectors ??any knowledge or help would be greatly appreciated