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Stuck turbocharger

December 11 2008 at 7:24 AM
Paul  (no login)


Response to Video attached - Smoking diesel

Hi Heidi,

I took your link and embedded the video, I think if you look at P-bucket closely you can see a code show up that has the "embed" code there, and that is what I used here to attach it for you.

Now back to the turbocharger! My experience is limited, but I suspect your turbo is lubricated with a pressurized oil line and the bearings are intended to float on a film of pressurized oil as the turbo spins to rpm of 20,000 rpm or so (in any case, it's spinning way beyond engine rpm). I had to have one rebuilt when the bearing failed and started putting lubrication oil into the exhaust side, making the motor smoke. The motor was in perfect shape, but the oil was going into the hot exhaust output side of the turbo and not leaking into the intake side. It was creating quite a smoke screen. If the turbo is stuck, I am concerned it has cooked oil in that bearing now because they get VERY hot, but I suppose even if not spinning the oil could still get through the bearing surface to keep things clear. Carbon in the exhaust is suspect too. I'm wondering about opening the Air intake side (easiest probably) and finding a spot where you can tap against the assembly without hurting the intake pressure vane. If you can find a place to tap gently against the assembly and try to force it to turn, perhaps it will free itself up and spin as it should. There is either a seized bearing or some sort of carbon obstruction that is keeping the unit from spinning. I'm surprised the motor runs without the turbo spinning.

Good luck,

Paul

 
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