light blue smoke

2005 BMW 530D
144,000 MILES • 3.0L • 6 CYL • TURBO • 2WD • AUTOMATIC
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MINDAUGAS NERAA
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  • 1 POST
cold engine fine after ten minutes start light blue smoke from exhaust smells a bit of burning diesel. can be bad fuel injectors?
May 22, 2017 at 8:32 AM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,330 POSTS
The cold engine is fine, then after ten minutes you get blue smoke?

The cold engine is fine after ten minutes?

Blue smoke is a sign of burning engine oil.
May 22, 2017 at 1:17 PM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,238 POSTS
Being a diesel and a turbo I would suspect it is the turbo seals that are the problem. As the engine warms up and the oil thins out the seals leak enough and the exhaust is getting warm enough to burn off the oil. Rebuild the turbo and the oil smoke should go away.
May 23, 2017 at 12:51 AM
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