I don't know if this is causing some of my driveability problems, etc, but I have a rich-running '91 300CE with a very noticeable exhaust leak where the rear exhaust pipe connects to the rear exhaust manifold. Rev the motor and you can see black smoke blowing out the joint...

Is there a gasket here or not? I don't see one on the online manual...so if there's no gasket can I just tighten it up - or is there some other reason for the leak?

Thanks,

Ryan

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RG Newell

1984 300D
1972 250
1986 560SL
1991 300CE