What Causes the Buzzing Sound When Turbocharging Engages?

[LeVanessa]

Turbocharger buzzing can be categorized into two scenarios. First, wear on the supporting copper bushings may cause abnormal noises. Second, damage to the turbo fan blades can lead to unstable operation and abnormal sounds during turbocharger operation. Both conditions accelerate turbocharger wear and require prompt repair at an auto repair shop. Symptoms of a failing turbocharger: 1. Poor sealing of the turbocharger impeller shaft: Symptoms include blue smoke from the exhaust at idle, varying in intensity. 2. Severe clogging of the exhaust gas recirculation pipe: Symptoms include blue smoke from the exhaust at idle and while driving, worsening when accelerating, along with high oil consumption. 3. Wear or aging of piston rings, cylinder walls, or valve oil seals: Symptoms include heavy blue smoke from the vehicle, abnormal noises from the turbocharger turbine end, and oil leakage from the turbocharger turbine end. 4. Cracked turbocharger air duct: Symptoms include a fluttering abnormal sound when accelerating or decelerating the vehicle.