smoke on 1991 Mercedes-Benz 560SEC

1989 560 my engine will smoke (blue) at high speed ,but vewry little at idle

by in Cedar Hill, TX on November 28, 2010
2 answers
ANSWER by on January 25, 2011
Valve stem seals are a common problem. They can be replaced without removing the head but requires some special tools to do the job.
ANSWER by on April 14, 2013
Suggest also remove valve covers and check cam oiling system.
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