Problem Reports
Mercedes-Benz 560SEC
Report: Valve Stem Seals Wear and Cause Catalytic Converter Failure
Mercedes-Benz 560SEC Problem
3 Reports
Model Years Affected: 1990, 1991
Verified
Valve stem seals may wear and cause the engine to burn oil. this can contaminate the catalytic converter and cause it to fail.
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Visitor, 1990 Mercedes-Benz 560SEC, 237,598 mi
Buring too much oil, catalytic no long functional.
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