How often ha you goten a rebuilt turbo that leaked more than the old one? i saw black oil seeping out the rubber hoses on the steel pipe going to the intercooler so i replaced the turbo and the new one isnt any better. The drain line is open.
What engine? Are you absolutely sure the original turbo was bad? Have you changed the air filter? did you clean ALL the hoses and tubes to remove residual oil, including having the aftercooler cleaned out? You aren't giving us a whole lot of info here.
It has a cummins ISX i put in a new filter the old one wasnt that bad and i had a new one on hand. I pulled every thing off and cleaned it.
On a good note at least you know the turbo is getting oil . Have a little oil residue around the hose connection at the turbo on the Fiat - Allis dozer . Don't notice any blue smoke or more oil use between changes . It's something a feller spots & thinks about …………….. To be honest in the big picture it's small stuff that don't matter much . Don't sweat the small stuff and full throttle ahead
I have gotten new turbos from Cummins, that the compressor wheel would hit the housing on. One night it took three different ones before I got one that didn’t hit the housing. Cummins swore that they were within spec. That oil pressure would make them run true.
If the oil backs up in the oil drain tube it will find a different way out. Pinched/ bent or crushed drain tube. High crank case pressure.
Yep, the ISX has that lovely breather filter/oil separator that can plug up.
The old one had the rubber hoses oily and coated the insides of the cooler. The new one has oil driping out of one conection.
Turbo bushings are(at least WERE) not press fits, they are designed to run in a oil bath film not contacting case or shaft. As noted on these late model messes they added crankcase recovery systems(for lack of better term PCV) where they get choked build pressure and seek the path of least resistance.
If the crankcase breather/filter gets saturated and plugs with oil it will set a code of high crankcase pressure and in some cases de-rate. The breather housing requires the filter be installed to keep it sealed but you can drill several 1/2" holes through the plastic body of the breather filter and reinstall, it will relieve the pressure and run fine until you can round up a new filter. Had to do that on a late Sunday afternoon and no parts. Truck Shop