What's with the car running around as soon as you step on the gas pedal?

Manual gear is the most obvious embodiment, mainly in the sudden shift. This is a problem caused by poor coordination between the throttle and the clutch. If it doesn't show up during the shift, we can roughly infer that the car has the following problems. The following inferences are for reference only.

Generally, when a car steps on the accelerator, it is caused by insufficient engine power, so it is necessary to check the ignition system and fuel system.

First of all, according to past experience, this situation is usually due to problems in the ignition system, so we can first check whether the spark plug needs to be normal, such as whether the electrode is seriously ablated, which makes the flashover weak, whether the ceramic insulator cracks and leads to electricity escape, and so on.

When we are driving, the car bumps when we step on the accelerator. First of all, we judge whether there is a colloidal object sticking to the accelerator pedal, which makes the accelerator pedal depth smaller when the driver steps on the accelerator and larger when the driver steps on the accelerator again. At this time, the throttle valve suddenly opened, which led to a sudden increase in the air intake of the engine, and the power of the car was frustrated.

It is also possible that the intake manifold is broken, and air enters the combustion chamber from the outside, but the air entering from the throttle does not decrease. ECU will only judge and calculate the air entering the cylinder from the throttle, but will not calculate the air entering from the damaged intake manifold, thus diluting the mixture concentration in the combustion chamber, resulting in insufficient power of the single cylinder, which is also the reason why our car will shake or stumble when stepping on the throttle.

Finally, there are factors such as nozzle blockage, ignition coil failure and spark plug failure. Because there is too much carbon deposited in the nozzle, the injection concentration is directly affected, and the failure of spark plug and ignition coil directly affects the normal operation of the engine block, resulting in engine cylinder shortage, power loss leading to jitter and frustration in refueling. If the above problems occur, I still suggest that the owner drive to the repair shop as soon as possible for maintenance inspection and troubleshooting as soon as possible.