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Mercedes (and BMW) straight sixes have a rough idle "by design"?!
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11-11-2010, 08:41 AM
mak
mark
Join Date: Jul 2006
Location: Westfeld .
Posts: 687
vacuum leaks
i would disconnect and plug all vacuum sources one by one and check for a improvement.
one thing for certain my 103 runs smoother in cool weather rather than hot summers.
mak
mak
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