Dt466 blowing oil out breather.

Dt466 blowing oil out breather i have seen a couple 466s blowing oil out vent due to turbo pressurizing crankcase also some will do it when cold hth bob . Chevyho, Jun 11, 2017. 9L Cummins, an open-loop system is employed, although Every engine produces blowby, but too much of it can be an indicator of cylinder damage or other engine wear. swingarm1. The Bus Full Access Member. As near as I can tell, it seems to be coming out the breather tube. 06 int 4300 dt 466 Blue smoke pouring out truck at idle and while driving. I have looked all over the internet for a replacement How to check & stop engine blowby with a balloon! Many years ago a old timer shared this with me & I would like to pass it on to future generations. The 04 is equally equipped and it cost us $36,000! I installed new valve covers and breather caps on my car about a year ago. Engines that are in certain types of duty will bypass more oil into the intake that others.