Posted by Bob on September 01, 2010 at 19:32:47 from (69.178.228.68):
In Reply to: excessive oil use in 6.5 posted by Martin Caldwell on September 01, 2010 at 18:36:19:
Your engine has excessive blowby and needs to be rebuilt.
The crankcase ventilation system spews the oil-laden blowby into the rubber elbow ahead of the turbo and that is the mess you are seeing.
There IS a valve called a CDR (crankcase depression regulator) (ACDELCO Part # CV916 GM#25098706) that closes in case of a clogged air filter to prevent the engine from drawing a high vacuum on the crankcase and these CAN go bad and leak and there's outfits selling them on fleabay as a cure for the problem you are seeing and probably there are a FEW instances where that is what is needed but 90+% of the time there is simply excessive blowby. Spend the money, if you like, then report back here as to what the results were. (LOL!)
I used to LOVE those diesels and still own a couple, the sad truth is they were a REALLY pathetic excuse of a "truck" engine.
Bottom line is, without ring sealing problems that dump combustion products into the crankcase you ain't gonna have the problem you are seeing.
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