Crankcase vent to intake

[bowandarrow]

02 cummins 24v I heard a suggestion to run the crankcase vent hose to my air intake. The concern with the factory set is that the hose end could freeze up and cause problems. I am in interior Alaska with extreme cold.
Has anyone done this or is there a good reason not to?

 

[tourqued]

I used to live out in Juneau ...... barf!
My concern might be an engine takes off, fueling on oil if something ever went wrong (run on)
Never heard of a Cummins doing it...but that would create a way?
The front vent pipe should not be too be a problem as it is...if it is , maybe that should be addressed?
They all dribble a little and i figure it is just salt protection...........

 

[Spike95]

I used to live out in Juneau ...... barf!
My concern might be an engine takes off, fueling on oil if something ever went wrong (run on)
Never heard of a Cummins doing it...but that would create a way?
The front vent pipe should not be too be a problem as it is...if it is , maybe that should be addressed?
They all dribble a little and i figure it is just salt protection..........

I suppose anything is possible, but for a diesel to run away you have to have a pretty steady source of unregulated fuel supply. That is usually an oil leak within the turbo. So long as there is still a baffle inside the valve cover, I don’t see it just steadily pumping oil out at a rate strong enough to support the engine running away. That said, if that ever happens to you, cover the air intake with something strong like a board to choke the engine out before it destroys itself.

 

[MAC830203]

PCV can be an issue if you don’t know the vacuum at idle and WOT. The set up you mentioned is fine. Severe leak down, and I mean severe or extreme wet/wash starts a possibility in a no start or cold start condition. All those issues should be explored. There’s a new adjustable PCV available and would be well suited for power adders e.g., turbo. If you’re just venting the crankcase now, but want s warm air source for your intake, there’s ways to capture exhaust heat and vent into intake. Relieves concern of high soot oil into intake.