If I read the original post correctly, the filter on the
electric pump on the
engine was clogged but the Racor was clean. I'm guessing the poster believes the Racor, which is up stream of the
pump, should have caught whatever was clogging the pump filter.
Since you say the Racor unit is more than 25 years old, I believe Racor changed the filter housing and cartridge in the 90s and provided an insert to allow the new cartridges to
work in the old housings. I'm not sure if I have that correct, but it is one thing to check on with Parker/Racor.
John