Engine/Transmission (1998.5 - 2002) Oil on turbo vanes!!!!

[rono]

I removed the AFE to access the oil filter to change it and saw black oil inside the turbo. There was enough puddled where the silencer ring used to be to equate to about 4-6 drops. There was also a good mist of oil on the sides of the inlet as well as on the blades. I wiped it all out and finished up.



The turbo has been barked a few times but that is all. I am assuming that the seal is leaking. Can it be replaced, how and where to get seal?



Thanks.

Ron

 

[Signal73]

Just a thought did you over oil your AFE?

 

[rono]

I thought about that as I did clean and oil the filter not long ago. However, the big black hose going from the filter to the turbo is clean inside.



Thanks, good idea though.

Ron

 

[JTCash]

I too had a sismilar oil issue as described & my intake hose was also clean... I saw that you have dual fuel gauges... Did you go before & after the filter so you can see the differential? I've thought about trying to find a dual gauge (2 gauges in one) that would show the Diff, so I could see when it's time to change the filter... As it is I can still get a feel for when it's ready, just by knowing the norm & changing it when the norm becomes 1 psi lower... But the Diff would be cool.



R/



Jim

 

[rono]

TJCash, what did find out about the oil in the turbo?



I attached a sender before the filter and one after the filter at the IP. I ran the sender signals to a miniture switch DPDT (from radio shack) and can switch between the senders to check FP before and after the filter. Then from the switch to the Dakota Digital Guage. Right now there is about 1lb. psi. difference.



Ron

 

[JTCash]

Ron,



Thanks for the feedback on the gauges... That's an awesome idea... . Still not sure about the film on the compressor vanes.



R/



Jim

 

[NicholasMiller]

I found the same oil residue on the inlet, I have 107K miles on the truck. I just figured it is caused by minor blow by at the turbine shaft seal. No oil in the hose from my AFE filter. Our 1998 S70 T-5 (turbocharged/intercooled) Volvo (137K miles) also showed signs of blow-by.

 

[NoSeeUm]

Quick note, they are more accurately called blades vs vanes.



Blades attach to the rotor and rotate with it. Vanes attach to the case and do not rotate radially (some can rotate axially). You see vanes in multi-stage compressors and turbines, not in the typical single stage automotive turbo.



Good luck with your problem.



Jim

 

[Kellydown]

Had the same issue with my K&N, oil on the blades, hose was clean. Swapped out to a BHAF, no more oil. that was 50k ago.

 

[rono]

Thanks, Kellydown, I hope that is all that it is.

Ron

 

[ESorensen]

How did you clean the blades?