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Problem Reports » Emissions-related ports in cylinder head may clog
Mercedes-Benz S500
Report: Emissions-related ports in cylinder head may clog
Mercedes-Benz S500 Problem
Model Years Affected: 1994, 1995, 1996, 1997, 1998, 1999
Verified
Ports in the cylinder head related to the emissions air injection and EGR systems can clog; the cylinder head should be removed and the ports cleaned.
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