Does the jitter disappear after the car starts?

Jitter when starting: 1, engine jitter caused by spark plug and cylinder line. The larger the gap between the anode and cathode of the spark plug, the smaller the surface area of the ignition point, which leads to the decrease of ignition energy required for compressing the air-fuel mixture, leading to the decrease of power, affecting power and making the automobile engine shake. In addition, the aging of the ignition coil causes poor flow or leakage of high-voltage electricity, which may also cause power decline, leading to unstable idle speed and jitter of the engine;

2. Engine jitter caused by fuel-air mixture ratio is a common phenomenon in old carburetor cars, but it will also happen if there is something wrong with the computer in EFI cars. It is worth mentioning that the oxygen sensor is installed near the root of the engine exhaust pipe in the current EFI vehicle, which is an important parameter for the driving computer to control fuel injection. In closed-loop controlled vehicles, the minimum working temperature of the oxygen sensor is 370 degrees Celsius. If the temperature in the exhaust pipe is lower than 370 degrees Celsius just after the vehicle is started, the oxygen sensor will not work, which will cause a temporary judgment error of the driving computer, resulting in an error in the control of oil-gas mixing and ignition time through the actuator.

3, valve, throttle, idle valve carbon deposition leads to jitter If carbon deposition occurs in the valve in the engine, it will lead to the valve seal is not strict, leading to the wrong judgment of the driving computer, affecting the oil-gas mixture ratio (air is greater than the normal ratio). Too much carbon deposit can also cause the phenomenon of carbon deposit absorbing gasoline, just like the principle of soil absorbing water is similar, which leads to less gasoline than normal, insufficient power and engine jitter.

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