What Causes Turbocharger Abnormal Noise?
1 Answers
The causes of turbocharger abnormal noise include: damage to the turbocharger (such as seized rotating shaft or impeller scraping the housing), leading to metal friction and abnormal noise; leaks in the intake or exhaust pipes, or cracks in the intercooler causing pressurized gas leakage. Below is related information: Other reasons: Bypass valve diaphragm rupture, causing pressurized gas leakage; burrs or protrusions on the inner wall of the housing, generating noise when high-speed airflow passes; accumulation of dirt in the turbocharger diffuser section. Symptoms of metal friction noise in the turbocharger: black smoke from the exhaust, decreased power, and abnormal noise from the turbocharger. Metal friction noise: If there is a metal friction noise, it is caused by excessive wear of the turbocharger rotor bearings or thrust bearings, resulting in friction between the impeller and the turbocharger housing. If the noise is not metal friction but rather an airflow sound, it is due to the high-speed rotation of the turbocharger rotor producing rotational noise, or leakage at the intake or exhaust connections due to poor sealing.