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White smoke is coolant burning ,black smoke is oil in my experience. Head gasket gone? Coolant need topping up regularly ? Any white residue, water in the oil? If that is the problem and the head is alright replace the head gasket and it might live again!
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When you say you have blowby, that is the tell tale sign of worn piston rings.
Blue Smoke is oil burning
White smoke is typically seen on start up as this is atomized diesel due to low combustion temperatures
Black smoke is over fueling, usually down to bad injectors or pump.
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Sounds like oil smoke. Wonder if it ate a piece of the last turbo when it let go? If so could be damage to pistons, rings or both. Did it smoke before the last turbo failed? Either way probs be cheaper to replace the engine or whole car, definitely easier. Just another thought, is the replacement turbo unit new, recon or second hand? Could be the turbo at fault??
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Compression test the engine to discount rings but unfortunately there isn't much more that could pressurise the crankcase to that extent. Is it down on power/lumpy idle?
2004 Peugeot Escapade 2.0HDI. 115k miles
2004 Volvo V70 2.4 208k miles
2011 Volvo XC90 215k miles
2005 Porsche Cayenne 170k miles
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