Hello, My 1990 240 dl has a problem when I start it up in the morning. When I start it up and give it some gas in park the motor will shake very very bad. It goes away pretty past maybe 5-10 seconds. It only does this in the morning. My wife says she sees some smoke as well. I am thinking it is a bad fuel injector leaking down over night. Am I on the right track? Is this a common problem on these cars? I have also heard there is a cold start-up injector on these cars. Is this true? Could that be the problem? Any help is much appreciated.
Sal