A Funny, Smoky thing happened on the weekend...

[Blueovals&Blacksmoke]

Originally Posted by Dodge/Cummins

CDR? I think it stands for Crankcase Depression Regulator or something like that. The way I understand it is it's sortta like a PCV valve for IDIs.

Gotta' RINSE it out with gasoline, no blowin' it out with an air nossle. If the internal diaphram is broken and chunks come out of it you have to replace it.
The 7.3 Turbos have it on the driver's side valve cover. Not sure about NAs or non-factory turbos.

This is pretty basic stuff I learned about I think the first day I was on this site so you may know about it already. Especially if you put on your own Turbo "kit" and had to relocate it.

No offense to Blacksmoke, I just thought royzell probably already knew about it and I didn't want to take credit for knowing what to do with it, I learned about it on here.

It is a VERY possible cause of the problem though.

well when my CDR went out it would put oil into my intake and the smoke would disipate as i went down the road

[S.P.]

RWIW... Moroso and others make a oil seperator for race cars that have a dry sump... nice looking unit.. I've ben wondering how I could adapt one to work on my truck..

[907.3 N/T]

whyle driving on flat surface no blue smoke but going uphill blue smoke any way of having a answer please. Thank you.

[royzell]

No Blue smoke at all except on downhill, loaded, as described

[David85]

Originally Posted by 907.3 N/T

whyle driving on flat surface no blue smoke but going uphill blue smoke any way of having a answer please. Thank you.

Has the timing been tampered with at all? how is the oil consumption?

[Dave Sponaugle]

Has the CDR been serviced recently?

[royzell]

Hi guys, the timing hasn't been touched in ages. 'Turns out, the genius that installed my turbo completely removed the CDR.

[David85]

That could do it. Some engines can run with just a strait vent hose, but not all it would seem.