Ah, just found Bentley_BMW_3-Series_Service_Manual_(e36).pdf
Gee, gotta disconnect park brake, exhaust system, driveshaft !!
Maybe I'll try to clean it out from inside the car first, through the openings for the fuel pump assembly & fuel level sender on the other side.
Should I be able to get to the 'hard to get at places' using these 2 access points?