Acceleration on 1990 Mercedes-Benz 560SEC

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Whenever I start driving the car, it doesn't accelerate properly.... I have changed almost everything and no luck yet.. any idea ??
(1) Answer
Yes, get it checked out by a MBZ specialist and get a diagnosis.
Replacing parts hoping to get lucky is not the way to fix cars. Diagnose first.
If you want to find a Benz specialist, here's our directory link for you: