Cummins Reman Turbo

[Unilevers]

(12-29-2016 )389guy Wrote:  

(12-29-2016 )Rawze Wrote:  

(12-29-2016 )Matt Wrote:  I have a reman turbo with about 60,000km on it doing just this. Little bit of oil sweating out of the silicone connector immediately after the compressor housing. I just had @m*m^2 put in middle of November and I'm wondering if the high idle amount we do coupled with the fact the engine isn't forcing the turbo to create back pressure at idle anymore is causing my issue. I'm also unsure of the condition of the CAC.. I've been looking around the city trying to find a test kit so I can verify it. Am I onto something or is my turbo toast?

Turbo is not toast unless it is bad enough to soak the intake manifold too.

YES, having less back-pressure on the face of the turbo can make a problem like that more pronounced, but does not cause it in itself. Like I said above, make sure there is at least some positive pressure at idle as well.

Rawze, when I pull the elbow off the turbo going to the CAC I can feel by hand the its blowing out a positive charge. However, as i slowly put the elbow back on and off again there feels like theres a slight suction. The inside of that elbow has been slightly oil dampened over the last year but recently is more pronounced. FYI my actuator sits right at 5% at idle. Im not sure why I'm feeling that slight negative pressure.

you may have a slight exhaust leak, which can cause that. The turbo can be tweaked to be brought up slightly to increase to a slight positive pressure.