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      05-22-2019, 09:25 AM   #10
Bimmer_Engineer
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Drives: 2007 335i
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Quote:
Originally Posted by bbnks2 View Post
Any chance you can get a boroscope down through a spark plug hole and see what the cylinder walls look like?
I'm gonna try another oil change first. It doesn't smoke at all once it's warmed up, and the volume of smoke on startup has decreased since I added the ATP conditioner...yet I still went through a quart in 750 miles. I also know that the intake tract is oily, I have an RB external PCV kit to install that I was gonna do after I walnut blasted but I may do it now and see how much of this is coming from the intake tract.

Are you suspecting that I may be getting blowby past the piston rings? I kinda figured the smoking is mostly because of the valve guide stems since it stops after a minute or two...
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