Have You Noticed Blue Smoke from the Exhaust? Does It Indicate Oil Burning?

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Have You Noticed Blue Smoke from the Exhaust? Does It Indicate Oil Burning?

Blue smoke from the exhaust is often a sign of burning oil. Have you observed this in your Hilux, and what was the cause?

Sandeep asked on 11 Feb 2025 14:13:42 pm

1 Answer

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Car Mechanic Expert - on 11 Feb 2025 14:16:05 pm

Yes, blue smoke from the exhaust is a clear sign of oil burning. Possible causes include:

Worn Piston Rings – Oil leaks into the combustion chamber.
Valve Seal Damage – Oil drips into the cylinders, especially during startup.
Clogged PCV Valve – Causes excessive oil vapors to enter the engine.

If you see blue smoke, its important to inspect and repair the affected components to prevent further damage.