I've got oil in the intake tube and the turbo - Ford Powerstroke Diesel Forum
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Old 12-22-2010, 01:43 PM
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I've got oil in the intake tube and the turbo

So my 97 PSD has some sort of leak in the turbo I think. I am not sure if any or all of these symptoms are related.

My mileage has gone from 18 to 10, there is an intermittent ringing sound coming from under the hood when I drive (think it might be the turbo, not sure though), and there is heavy oil in the turbo and intake tube.

It does not smoke and I haven't noticed any power loss. The turbo has no shaft play and spins freely.

Any ideas??
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Old 12-23-2010, 08:02 AM
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oil is normal in the intake tube and turbo from the crankcase tube. Check the turboshaft for play. check to see if the fins are hitting the case. check your air filter to see if it s dirty, if it is, it will put a vacuum on the crankcase breather and suck oil out. Also keep in mind winter diesel doesnt burn as well as as summer diesel leading to a decrease in mpg
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Old 12-23-2010, 09:38 AM
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I understand the winter diesel effect, but I doubt that it would account for an 8 mpg loss. Maybe part of it, but not all. The filter is relatively new and there is no play in the turbo shaft.

I am not sure about how much oil in the turbo is normal, but there is a small puddle and the intake tube has a reasonably thick coating in it.

Is there a seal that would go bad in the turbo?

What sensors could account for the mileage loss?
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