What are the symptoms of insufficient engine air intake?

[McLila]

The symptom of insufficient engine air intake is more fuel and less air, resulting in insufficient engine power, engine shaking, etc. The following are the reasons for insufficient engine air intake: 1. Air filter clogging: The clogging of the air filter increases the intake resistance and reduces the amount of air entering the cylinder, leading to incomplete fuel combustion and insufficient engine power. 2. Excessive carbon deposits on the throttle: Excessive carbon deposits on the throttle and surrounding intake passages change the cross-sectional area of the air passage, making it impossible for the control unit to precisely control the air intake, which also leads to insufficient air intake, excessively rich or lean mixture, and engine shaking.