I have a 1995 280 c merc. I have a problem with it that comes and goes. this has happened twice already. this morning when I was driving to work, the car suddenly started to run rough. When I accelerated I could hear that one of the cylinders was not working. I also felt it in the loss of power. Do u have a diagnostic machine there? I would like to know right away what the problem is without having to wait till the next day to know.