"tech support!" "tech support!" "tech support!"

[i8av8]

have a oil leak and was under the assumption that it was my valve seals because it smokes on cold starts and goes away after driving around for a few minutes. plus, that is what everyone was telling me.

well, today while i was waiting for the long warm-up before i could start heading home i was doing some further inspecting on the motor and overall engine bay and noticed a oil leak on the frame below the turbo>exhaust side.

sure enough it's dripping oil from the back side (facing firewall) of the exhaust side of the turbo.

could it be from the valve seals and accumulating at the turbo? it appears to be coming from the welded disc of the internal waste gate (upon quick inspection)

please help, tia!

 

[rockclone]

Re: "tech support!" "tech support!" "tech support!"

More then likly thats whats going on i have ben a gm tech feel free to ask me anything

 

[gkrcr882]

Re: "tech support!" "tech support!" "tech support!"

Oil coming from the turbo could be many things, including the turbo seals themselves. Another thing to remember with the "startup smoke" on these trucks is that the stock PCV routes to the inlet side of the turbo so the system still functions when in boost, so a small amount of oil in the compressor side is normal. There are also oil supply and return lines running to an from the turbo which can/do leak over time.

 

[ghettosled]

Re: "tech support!" "tech support!" "tech support!"

pull the turbo and see if the downpipe is wet with oil and compare it with the exhaust pre turbo. Will tell you if the motor is oiling or the turbo. Make sure you dont have a kink or restriction in your turbo oil drain line also.