What is the reason for the jitter of automobile shift valve?

1, engine jitter caused by spark plugs and cylinder lines

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 to compress the oil-gas mixture, which leads to the decrease of power, affects power and makes the automobile engine shake. In addition, the aging of the ignition coil may lead to poor flow or leakage of high-voltage electricity, and may also lead to unstable idle speed of the engine and jitter due to power reduction.

2. Engine jitter caused by oil-gas mixture ratio

This phenomenon is very common in old carburetor cars, but if there is something wrong with the computer, it will also happen in EFI cars. The reason is simple and easy to understand. I studied the working principle of internal combustion engine in junior high school.

3, valve, throttle valve and idle valve carbon deposition lead to jitter.

Nowadays, most family cars are equipped with high-speed engines. When this kind of engine needs to shift gears, the engine speed should be 2500 rpm, otherwise it is easy to cause carbon in all areas of the engine. If there is carbon deposit on the valve of the engine and the valve seal is not tight, it will lead to the wrong judgment of the driving computer and affect 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.