85 190E 2.3L 180,000 miles. My 190 won't start. After towing it home I was able to start it in the garage by removing the air cleaner and spraying in ether. I could keep it running by keeping the rpms above about 2000. However, it wouldn't idle. It would also start if the plate on the airflow sensor was held down slightly. When it was running the mixture smelled rich. The ambient air temperature through all of this ranged from 15-28 degrees.

Any ideas?