Blue smoke

Bloom_435i · 07-11-2022, 05:16 PM

Recently my 435i has been blowing blue smoke but only after idling for a little bit then once you go, it smokes. Also there is no smoke while driving.The car drives the same and the car isn't throwing any codes. Tomorrow I'm going to check in the chargepipe to see if theirs oil in it. Just looking for any ideas of what it could be. I'm leaning towards bad valve guide seals because another forum member had also experienced this.

thejeremyman9 · 07-11-2022, 06:02 PM

Oil in inlet/TIC/IC/CP is blowby from CCV hose.

Oil going directly into the combustion chamber is likely valve guide seals as you mentioned

Oil going into DP and burning off in the exhaust can be turbo seals.

Just need to figure out where the oil is

07-11-2022, 05:16 PM	#1
Bloom_435i Private First Class 24 Rep 166 Posts Drives: 15' 435i xdrive Join Date: Jan 2021 Location: Hopewell New York iTrader: (1)	Recently my 435i has been blowing blue smoke but only after idling for a little bit then once you go, it smokes. Also there is no smoke while driving.The car drives the same and the car isn't throwing any codes. Tomorrow I'm going to check in the chargepipe to see if theirs oil in it. Just looking for any ideas of what it could be. I'm leaning towards bad valve guide seals because another forum member had also experienced this.
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07-11-2022, 06:02 PM	#2
thejeremyman9 Major General 4374 Rep 7,624 Posts Drives: 2015 BMW 335i Join Date: May 2019 Location: Cali iTrader: (0)	Oil in inlet/TIC/IC/CP is blowby from CCV hose. Oil going directly into the combustion chamber is likely valve guide seals as you mentioned Oil going into DP and burning off in the exhaust can be turbo seals. Just need to figure out where the oil is
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