Fuel filter and fuel pressure

[PeteF]

Hello Bob, need your help on ERA2041. About a month ago, the engine started running rough intermittently, and I suspected fuel delivery problems. Since there was no fuel filter (under the hood), and I coudn't see one under the frame, I assumed there was none. So, I installed a canister filter and pressure gage under the hood. The car ran fine for the past month, with about 5 psi fuel pressure (351W with mechanical pump, no regulator). Today, while the car is warming up, with the choke still on, engine speed suddenly drops. Car runs ok, but after a drive to fully warm up, fuel pressure is now steady around 3 psi. In talking with another ERA owner, I learn that there is indeed a filter by the tank, in front of the access panel in the trunk. Now, I'm suspicious of a clogged filter, or a failing pump. (the car has 38,000 miles).And, I don't feel comfortable driving around with 3 psi fuel pressure. I think a mechanical pump can push better than suck, so I want to remove the filter by the tank. I pulled the access panel, and can clearly see the filter, but can't get enough access through the frame and tank to remove it. Is there an easy way to remove this filter? Anyone else who can comment is welcome. Thanks