Crankcase Blowby - How Bad is This?

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Joined
Dec 11, 2025
Threads
7
Messages
15
Location
Northern Minnesota
At the start of the video, the PCV pipe is hooked up and unrestricted. When I pinch the rubber part of the PCV pipe with a pliers, you see the white gas/smoke coming out of the oil fill hole. I didn’t clamp down extremely hard, so presumably some gas is still moving through the PCV pipe.

How bad does this look? I don’t have a reference point for this.

Engine is at normal operating temperature. I’m getting oil loss with minimal smoke in the exhaust and no drips. I suspect the turbo oil seal is the problem.

Thoughts?

EDIT: I don’t think the video is showing up. Is it possible to attach videos? Or only photos? I added a screenshot from the video. The white blowby is sort of visible. It is actually a little bit more visible in the video.

IMG_4153.webp
 
Last edited:
Crankcase pressure can prevent oil from returning to the engine from the turbo, pushing it past the turbo seals instead.
 
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