What are the reasons for turbocharger not engaging?
2 Answers
Possible reasons for turbocharger not engaging include: Reason 1: The turbocharger unit has reached the end of its service life. Reason 2: Damage to the intake system allows dust to enter the turbocharger, damaging the unit. Reason 3: Damage to the engine block causes oil burning, affecting the turbocharger. Reason 4: Failure of the cooling system leads to excessive turbocharger temperature, damaging the unit. Precautions for using car engines: To ensure normal engine operation and prolong service life while reducing oil consumption, it is essential to choose a high-quality engine oil. This is particularly important for engines with turbochargers, as their higher operating temperatures impose greater demands on the engine oil.
I've repaired many cars with turbo problems, and the most common issue is intake pipe leaks. The rubber hoses tend to age and crack over time, causing air leaks that prevent the turbo from building pressure. Another common problem is the turbo itself seizing up, especially in older cars with poor-quality oil—carbon buildup can stick the blades together, making them unable to rotate. Then there’s the wastegate getting stuck in the open position, releasing all the pressure. Last time, I encountered a car where the wastegate actuator rod was rusted shut, causing all the exhaust to bypass the turbo. Oh, and don’t forget to check the sensors—if the boost pressure sensor or intake air temperature sensor fails, the ECU will directly limit boost. Lastly, insufficient oil or clogged oil passages can cause the turbo shaft to seize, which isn’t uncommon. All these issues need to be checked one by one.
