New turbo Kia Sorento 2.5 crdi 103KW 733952-0001 733952-1 733952-5001S 733952-0004 733952-5004S 733952-4 282004A101 28200-4A101

New turbocharger replacment GT1752S Kia Sorento 2.5 CRDI 140HP/103KW D4CB

733952-0001 733952-1 733952-5001S 733952-0004 733952-5004S 733952-4 282004A101 28200-4A101

Turbocharger GT1752S – Symptoms of Failure

Vehicle: Kia Sorento
Engine: 2.5 CRDi D4CB (140 HP / 103 kW)
Turbo model: GT1752S

The GT1752S turbocharger used in the Kia Sorento 2.5 CRDi D4CB engine is reliable under normal conditions, but may fail due to high mileage, oil contamination, overheating, or improper maintenance. Below are the most common symptoms of turbocharger damage:

1. Loss of Power

• Sluggish acceleration
• Reduced boost pressure
• Poor performance under load

2. Excessive Exhaust Smoke

• Blue smoke – oil leaking past worn turbo seals
• Black smoke – insufficient air supply or boost leak
• White smoke – possible oil entering exhaust side

3. Unusual Noises

• High-pitched whistling during acceleration
• Siren-like sound
• Grinding or metallic noise (bearing or shaft damage)

4. Increased Oil Consumption

• Frequent need to add engine oil
• Oil inside intercooler hoses or intake pipes

5. Oil Leaks Around Turbocharger

• Visible oil on compressor or turbine housing
• Oil residue in intake system

6. Boost Pressure Problems

• Underboost or overboost condition
• Delayed turbo response
• Engine warning light or limp mode activation

7. Excessive Shaft Play

• Noticeable radial or axial movement of the turbo shaft
• Risk of turbine or compressor wheel contact with housing

Common Causes of Turbo Failure

• Poor oil quality or extended oil change intervals
• Blocked oil feed/return lines
• Engine overheating
• Contaminated air intake system
• Abrupt engine shutdown after heavy load (no cool-down period)

Recommendation

If your Kia Sorento 2.5 CRDi (D4CB) shows any of the above symptoms, immediate turbocharger inspection is recommended. Driving with a failing turbo can result in engine damage or complete turbo breakdown.