what cause grey smoke from 5501 2008 bmw

Asked by Guru9RDK66 Jul 18, 2022 at 05:17 PM about the 2008 BMW 5 Series 550i Sedan RWD

Question type: Maintenance & Repair

grey smoke, mostly when vehicle is started

1 Answer

310,085

Most likely it is oil smoke from sitting overnight, it is possible that the valve guides and or seals have worn just enough so oil drains down into the cylinders when sitting overnight so you get smoke on initial start up. Just keep and eye on oil levels. If it is actually white smoke then it can be a cracked head or headgasket and that would be followed by a loss of coolant.

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