What causes the popping sound from the exhaust pipe at idle?
1 Answers
Possible causes include fuel line A, fuel line blockage, poor flow, rail pressure, etc. Below is an introduction related to car idle conditions: 1. The function of car idle: Idle is an operating condition of a car, referring to the engine running in neutral gear. The engine speed during idle is called the idle speed. The idle speed can be adjusted by changing the throttle opening size, etc. Idle means the engine "produces power without doing work." When the engine is running, if the accelerator pedal is fully released, the engine is in an idle state. 2. Reasons for unstable idle: Direct causes refer to mechanical parts being dirty, worn, or incorrectly installed, leading to changes in cylinder power, resulting in an imbalance in power among cylinders and causing unstable engine idle. Indirect causes refer to abnormalities in the engine's electronic control system, leading to poor combustion of the air-fuel mixture, making it difficult to balance the power among cylinders and causing unstable engine idle.