There is also a plastic re-usable (wash with soap and water) fuel pump filter located inside the fuel tank below the fuel pump.Soak the 8 fuel pump bracket screws with a deep penetrating lube such as:
AeroKroil Oil (from Kanolabs)
PB Blaster,Liquid Wrench
Toyota Rust Penetrant
High Performance Penetrating lube
Rust Check
several times prior to removing the bracket to access the fuel pump filter. I would say that the old rusted gasoline got shaken around and clogged your secondary filter.
Sidney® ™
Repairs tv's,vcr's,home/car audio out of my home
E-mail:sidneybek@yahoo.com
Dartmouth,Nova Scotia
Canada
1985 Toyota 4-Runner,solid front straight axle,factory cruise control,sunroof,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 244 000 KM

for I am