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Old 07-22-2001, 02:14 PM
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JCE JCE is offline
Down to the Wear Bars
Join Date: May 1999
Location: So Kalifornia
Posts: 2,189
You may be getting close to needing valve guides/seals, which I understand many of the older m103 engines need around 100-150k miles. i don't know if MB had changed to the new guide/seal materials by 1991, but it is worth checking out.

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