1994 Chevy Lumina tbi is flooding

My problem started out small just every once in a while it would try to flood going down the road let up off the accelerator and it would straaighten out. Finall got bad so I changed the plugs, filter roter, Distributor cap and checked the wires to no avail. Still floods I am used to dworking on the older cars but dont know much about the new ones with TBI Could I get some help out there.
Thanks
Flooding in Oklahoma