Quote:
Originally Posted by CnSky
My view was...
If there is no rotation in park with engine on but the shake is happening it could be a misfire or coil issue but the engine is not exhibiting any symptoms apart from some black build up on the exhaust tips that seems to have come back very quickly.
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Problem with DI engines, exhausts black very quickly and don't clean even with harder use. Keep it in mind, but don't get too concerned unless there are other signs of an engine smooth running issue.