I'm changing fuel filters boue every 2 weeks not finding any trash or water n em & I'm losing power...what would b the thing i need to look into? Any help with this would b appreciated...

I'm changing fuel filters boue every 2 weeks not finding any trash or water n em & I'm losing power...what would b the thing i need to look into? Any help with this would b appreciated...

Sounds like it's time for an injection pump rebuild.