i need to smog my mbz in the past after smog governer broke on 1992 Mercedes-Benz 190E

i was told that when smogging mbz the car cant be put on racks. i lost my car for 7 months last time i had smog. Scared have you heard of this. My transmission would not move from 1st gear

Asked by for the 1992 Mercedes-Benz 190E