BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST - View Single Post - Blue smoke on cold start and oil consumption

Eddamoo · 03-22-2024, 03:44 AM

I would say to first check the PCV system. The diaphragm can break causing liquid oil (as opposed to just vapour) to trickle into the Inlet Manifold.

Failing that - it could be Turbo Seals or Valve stem oil seals possibly.

03-22-2024, 03:44 AM	#2
Eddamoo Captain 407 Rep 823 Posts Drives: BMW 430dX Join Date: Apr 2018 Location: Sheffield, England iTrader: (0)	I would say to first check the PCV system. The diaphragm can break causing liquid oil (as opposed to just vapour) to trickle into the Inlet Manifold. Failing that - it could be Turbo Seals or Valve stem oil seals possibly.
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