Hello,
I have an 88 mercedes 560sec. When I start the car it shakes VERY badly until it gets warmed up, once its warmed up it seems to run pretty good though. It is not just a vibration, the whole car shakes. I'm thinking that it is an injector. But I've read many things on here about different things. Oh and I've been driving the car like this ( I know It's probably bad) and it hasn't got any worse. Let me know what you think it is and how much to get fixed. Thanks for any and all advice.