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New turbocharger replacment BV39 1.5DCI K9K 76–81 kW

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Turbocharger BV39 – Symptoms of Failure

Engine: 1.5 dCi / K9K
Power range: 103–110 HP (76–81 kW)
Turbo type: BV39 (Variable Geometry Turbo – VNT)

Compatible Vehicles

Nissan

• Nissan Qashqai 1.5 dCi 106 HP
• Nissan Tiida 1.5 dCi 106 HP

Renault

• Renault Clio III 1.5 dCi 106 HP
• Renault Kangoo 1.5 dCi 103 HP
• Renault Laguna III 1.5 dCi 110 HP
• Renault Megane II 1.5 dCi 106 HP
• Renault Modus 1.5 dCi 106 HP
• Renault Scenic II 1.5 dCi 106 HP

Common Symptoms of Turbocharger Failure

1. Loss of Engine Power

• Sluggish acceleration
• Weak or delayed boost
• Poor torque under load

2. Excessive Exhaust Smoke

• Blue smoke – oil leaking through worn turbo seals
• Black smoke – insufficient air supply / boost leak
• White smoke – oil entering exhaust

3. Unusual Turbo Noises

• High-pitched whistling or siren-like sound
• Grinding or metallic noise (bearing / shaft damage)

4. Increased Oil Consumption

• Frequent oil top-ups
• Oil in intercooler or intake hoses

5. Boost Pressure Problems

• Underboost / overboost fault codes
• Check engine light on
• Limp mode activation

6. Variable Geometry (VNT) Malfunction

• Sticking vanes due to carbon buildup
• Delayed or irregular turbo response
• Inconsistent boost pressure

7. Excessive Shaft Play

• Radial or axial movement
• Risk of turbine or compressor wheel contact with housing

Common Causes

• Poor oil quality or extended service intervals
• Blocked oil feed or return lines
• Carbon buildup from EGR system
• High thermal load from aggressive driving
• Improper engine shutdown after heavy load

Recommendation

If your Nissan or Renault 1.5 dCi (BV39 turbo) shows any of the above symptoms, immediate inspection of the turbocharger and lubrication system is recommended. Continued driving with a failing turbo may result in severe engine damage or complete turbo failure.