Vehicles using OM628.961 engine list:

Engine OM628.961

Symptoms:
- Rough idling and loss of power
- Excessive smoke from the exhaust (black or blue)
- Engine warning light illumination
- Oil leaks around the valve cover and turbocharger area
- Increased oil consumption

Diagnosis:
- Inspect for turbocharger wear or failure, as this engine is prone to turbo issues
- Check for injector leaks or malfunction, causing poor combustion and smoke
- Examine valve cover gasket and turbocharger oil seals for leaks
- Perform a compression test to assess cylinder health
- Scan engine control unit (ECU) for fault codes related to fuel injection and turbocharger control

Fixes:
- Replace worn or faulty turbocharger components or the entire turbocharger if necessary
- Repair or replace leaking fuel injectors to restore proper fuel delivery
- Replace valve cover gasket and turbocharger oil seals to stop oil leaks
- Clean or replace the EGR valve to prevent clogging and improve emissions
- Regularly change engine oil and use manufacturer-recommended oil grade to protect turbocharger and engine internals

Prevention:
- Adhere to strict oil change intervals using high-quality synthetic oil to prevent turbo and engine wear
- Use fuel additives or high-quality diesel fuel to keep injectors clean
- Avoid prolonged idling and allow the engine to warm up before heavy acceleration to protect the turbocharger
- Regularly inspect and maintain the cooling system to prevent overheating
- Schedule periodic professional diagnostics to catch early signs of injector or turbocharger issues

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