What causes a popping sound when starting the car?
1 Answers
Car makes a popping sound at ignition moment, which is caused by incomplete combustion. This sound occurs when the air-fuel mixture enters the exhaust pipe and burns. It is recommended to clean the throttle body, fuel injectors, and carbon deposits in the intake tract to solve the problem. Additional information: 1. Car carbon deposits: Carbon deposits are accumulations formed when fuel and lubricating oil exhaust cannot be completely burned (main components include hydroxy acids, asphaltenes, tar, etc.). The formation of these deposits is directly related to the car's "fuel" and "lubricating oil". 2. Hazards of carbon deposits: They reduce engine power, cause uneven and gradually decreasing power output, increase fuel consumption, add economic burden, and make cold starts difficult, especially in winter.