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Are you having problems with your 2006 Volvo XC90? Let our team of motoring experts keep you up to date with all of the latest 2006 Volvo XC90 issues & faults. We have gathered all of the most frequently asked questions and problems relating to the 2006 Volvo XC90 in one spot to help you decide if it's a smart buy.
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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.