Flushing problem

Long story short..

Went to help a neighbor with a toilet that appeared to have something stuck in the trap. After plungering it to death, small particles of material that appeared to be rust and or rock coming back into the bowl. Is it possible the inside of the trap area is rotted and is preventing a full flush??? Or can it just be something logged in the trap?? When I plunge I see no paper etc.

Any advise is appreciated.

daves

He could have cast iron pipes, and you really are seeing rust. You wouldn't see rust back up into the bowl if there wasn't a clog somewhere beyond it. The plunging agitated things, and broke some off of the inside of the pipe? Normally, it would just flow down the drain...My unprofessional opinion.