before you start taking your dist out or yanking your engine apart, start from the real basics. if it's a vac leak it would be a constant miss.figure ot if it's a fuel delivery miss or an electrical miss. more than likely it's just a bad plug surpressor. measure the ohms from end to end on each plug wire. probably 1.5 on that car. see if they are all even. it's the first thing you should do and the easiest and and is the problem for an sharp miss at idle most of the time.
paul

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Paul Roberts
Mercedes Centrum Inc.
Bellevue,WA.