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    Turbocharger in 2006 Volvo XC-90 smoking despite being replaced

    Volvo Volvo Advice Volvo XC90 Volvo XC90 Advice Volvo XC90 2006

    I have replaced the turbo in my 2006 Volvo XC-90, however it is still smoking badly. Do you know what could be the reason?

    Answered by CarsGuide
    1 May 2024
    David Morley

    The first thing to figure out is what type of smoke it is; oil smoke or fuel smoke. If the smoke is black, then it’s probably excess fuel that is being injected into the engine. If the smoke is a bluish-grey, then it’s likely to be oil smoke. The major causes of oil smoke are worn piston rings or valve guides and their seals. If it’s either of those thing, it will be a fairly major repair bill.

    But it would also be worth checking the crankcase ventilation system as this can cause an engine to smoke, too, and is a much simpler fix.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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