What is this blue smoke behind a wall?
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What causes blue smoke on startup?
Blue smoke can often look like grey smoke at first. But if you notice a distinctive bluish tint, it may signal that the engine is burning lots of oil. This could be due to worn engine components like piston rings, valve seals, or PCV (Positive Crankcase Ventilation) valves.How do I fix blue exhaust smoke?
How to Fix Blue Smoke from ExhaustCan too much fuel cause blue smoke?
Yes, there's a possibility of blue smoke being caused by the overfilled engine oil. This can occur when the crankcase is over-pressurized due to the sump being overfilled. Consequently, the additional oil will be forced up the cylinder wall and into the combustion chamber.Smokie - Something's Been Making Me Blue (Official Video) (VOD)
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