Blue smoke from a 6.0L Power Stroke means the engine is burning oil - often through the injectors, turbo seals, or crankcase ventilation.
What causes blue smoke on the 6.0L Power Stroke
- Injectors passing oil (stiction/wear)
- Worn turbo seals leaking oil into the intake
- Crankcase ventilation pushing oil
- Worn valve seals or rings (higher mileage)
How to diagnose it
Determine when the blue smoke appears (startup, acceleration, steady) to localize it. Check the turbo for shaft play and oil in the intake, and evaluate injector condition.
The fix
Replace oil-passing injectors, address worn turbo seals (cartridge or turbo), and service crankcase ventilation. Keeping clean oil on schedule helps injector stiction.
Frequently asked questions
What causes blue smoke on a 6.0L?
Burning oil - commonly injectors, turbo seals, or crankcase ventilation. Note when it appears to localize the source.
Is blue smoke serious?
It signals oil consumption that should be diagnosed before it worsens.
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