I replaced the fuel filter on my Nova today with a FRAM G12 which is a clear filter with a paper element. The old filter was completely full of fuel when I pulled it off. I put the new filter on and the car runs just fine, but the filter only gets about 1/6 of the way full. Is this normal or is my fuel pump likely weak? Interestingly enough I also have a '71 Duster with a 360 in it. I run the same type of filters on it (it has 2 of them) and they don't ever fill up either. The Duster even has a brand new fuel pump. Maybe I'm just being paranoid. Can anybody shed any light on this? Do I need to upgrade my factory replacement pump for something better? My car has a mildly built 350 with the typical performance bolt ons. Running a new 600 Holley, Edelbrock SP2P intake, headers, Flowmaster exhaust.