broken turbo

[West, David]

Hello all,

Just a quick one,

If a turbo housing failed in some way near the oil galleries is it 
true that you generally only get oil into the combustion chamber when 
under vacuum conditions where as boost will pressurise the oil 
galleries? Secondly, when this oil burns will it be mainly whitish 
smoke? Thirdly, should this oil be present throughout the intake 
manifold or is it fine enough mist that it is hard to detect.

I have bluey / black smoke coming out my exhaust and are just trying 
to rule out a blown turbo. I think that a have a major enrichment 
problem as my plugs are fouling quickly and my car is not driveable. 
All sensors appear to be operating correctly, ECCM shows no fault 
codes and compression is ok.

Any suggestions much appreciated.

Regards,

David West