Hi Hoppy:
I do like the
oil pan idea. All of the alternatives are much more costly.
Ok, so you have two fuel filters AND an electric filter in line. That amount of hydro dynamic resistance is asking alot of your mechanical fuel pump alone. I am still perplexed as to why it runs fine initially and then after 20 or so minutes it then gets cranky. It may be that the mechanial pump gets hot.
The first thing I would do would be to change the rear most filter inline as it is doing the yeoman's amount of work and is most likely to be clogged or restriced in the big scheme of things. The part number for that on the ERA is the WIX 33033 or equivalent. It is directional and usually there is an arrow pointing in the direction of flow.
I too have the ERA SW gauges. My gas gauge is likewise jittery and fickle. In fact my wife gave the car its name due to the apparent normally common reading condition of the gas gauge... "Half Full".
My SW Tach was very very bobbly and jittery and giving false readings. There is a lengthy discussion of this here on the board with how I eventually solved the bobble. Yours does not appear to bobble.
I hope your clothes did not get too dirty...
