after reading this thread i was thinking of getting a used percolator next time i'm at the thrift store, but after getting an ultrasonic cleaner on amazon for about $80 and using it on high heat with evaporust i think i won't need the percolator anymore
i tried it out on a fuel pump and i like how it worked, first pass was the whole unit so that i could pull it apart easier, then i did all the individual bits, some needed 2 cycles at 20 minutes, but in the end i like how it did

photos attached
-s
Attachments
fuel_pump_1523089.jpg (27.19 KB, 153 downloads)
pump_parts.jpg (148.78 KB, 152 downloads)
pump_diaphragm.jpg (77.15 KB, 151 downloads)
pump_top_pits.jpg (81 KB, 154 downloads)
pump_clean.jpg (71.79 KB, 155 downloads)