motor help

i need help my teg is not running good it lost power and it like bogs at at like 5500 rpms i have to fix my head and shit and it starts find and shit it just not running good if anyone can help please do

You need to be more specific with what ur problem is. No one is going to understand and know what’s going on when u just come at us with " It lost power and it bogs at 5500rpm and I need to change the head or fix the head and then it starts fine".

Let us know more of how it happen and stuff and what u have changed since and before the problem started.