What are the causes of intake flow system performance failure?

[SanJulianna]

The causes of intake flow system performance failure: 1. Inaccurate resistance value of the potentiometer wiper, poor contact between the potentiometer sliding arm and carbon film resistor, insufficient tension of the return spring, poor contact of the fuel pump switch point. 2. Incorrect frequency signal transmission due to electronic component circuit failure. 3. Contamination of hot wire or hot film, damage to hot wire or hot film, poor performance of thermistor. 4. Air leakage in the intake system or damage to the air flow meter, requiring inspection of the pipeline between the air meter and throttle valve for air leakage. Additional information: 1. Common causes of air flow meter failure: short circuit, open circuit, or abnormal air intake signal, all of which can lead to abnormal fuel injection, causing the mixture to be too rich or too lean, resulting in poor engine operation or reduced power. 2. Damage to the air flow sensor: generally caused by excessively dirty intake air, leading to dust accumulation that affects its detection accuracy and lifespan.