Greetings everyone!

I'm working through some fuel line issues on a 69 IIA SWB and have swapped the existing fuel filter, a metal bodied AC-DELCO GF61, with a clear plastic equivalent to find the fuel inside the fuel filter remains only half full (the filter is positioned horizontally).

It runs fine (knocking on wood), but I'm thinking that the filter should be full. Its a mechanical fuel pump. I've tightened the connections, removed and cleared the intake at the tank and cleaned the bowl. Still only half full no matter what i've done.

Do I keep at it because there is a air leak or let this go because it is what it is?

Also, I've read a suggestion to place another filter after the pump. Is this a good recommendation and would it be the same type as used before the pump?

Thanks in advance! These forums have been a great help. Thanks to the hosts and posters!