The most common reason for Binyue’s unstable idling speed is that air, gasoline vapor or combustion exhaust gas enters the intake manifold of the car, causing the mixture to be too rich or too lean, resulting in abnormal engine combustion. If the air leakage affects individual cylinders , the engine will vibrate, causing the car to idle. The main reasons are loose intake pipe clamps, air intake manifold liner leakage, fuel injector O-ring leakage and so on.
Too much fouling on the throttle valve and intake duct is also the cause of Bin Yue's idling speed. When there is too much carbon deposit on the throttle valve and the surrounding intake passage, the area of the air passage changes, causing the gas to be too thick or too thin, causing abnormal engine combustion and making the car idling unstable. Possible causes include carbon deposits on the throttle valve, dirt on the air intake around the throttle valve, carbon deposits on the idling stepping motor, and so on. Failure of the fuel injector will also cause the car to idle, the fuel injection volume of the fuel injector is uneven, and the mist is not good, which makes the power emitted by each cylinder unbalanced. The main reasons are that the injector is clogged and the seal is not tight. Spark plugs and high-voltage line failures are also the cause of the car idling. Faults in spark plugs and high-voltage lines lead to a decrease in spark capacity. Common causes include abnormal gaps in spark plugs and damage to spark plugs.
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