MTU Onsite Energy
Oil Burning in Combustion Chambers
Blue smoke from exhaust and rising engine oil consumption
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Worn piston rings, Worn valve guides or seals, Overfilled crankcase, Turbocharger oil seal leak
How to Fix / Troubleshooting
Safety first: Monitor oil level closely to avoid running the engine low on oil.
- Check oil level: Ensure the crankcase is not overfilled. Drain excess oil if above the maximum mark.
- Monitor consumption: Record oil usage over several run hours. Excessive consumption indicates internal wear.
- Inspect breather system: Check the crankcase breather for blockage that could increase oil carryover.
- Turbo inspection: Look for oil in the intake piping downstream of the turbocharger, indicating seal issues.
- Professional evaluation: Persistent blue smoke requires engine inspection by an MTU technician for rings, valves, and turbo condition.
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Repair Difficulty
Professional Required
5/5
Required Part
Turbocharger Assembly
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