None of the split case motor blocks had sound, the sound was in the powered tender which has a sound label on each side between the wheels. If you see a lever on the bottom front of the engine then it came with smoke.
No #3 stainz had sound or smoke, however smoke can be added.
Newer Marklin stainz can have sound, smoke, digital and analog running.
Get the engine 5 digit number off the bottom (first digit is always a 2 ) and get an online manual by searching for LGB (model #) pdf such as LGB 2017D pdf