How to solve the problem of low-speed frustration

The first problem is the ignition coil, but the ignition coil is generally not a problem. It is estimated that it is the influence of carbon deposition. Clean the throttle and spark plug carbon deposit, or 4s inspection! Some cars 1, two spark plugs do not ignite or the fire head is weak, which is the symptom. Just replace it!

My car ran 30 thousand kilometers. After the first gear was changed to the second gear, the second gear was changed to the third gear, and the third gear was changed to the fourth gear, the refueling was obviously frustrated. After changing the high-voltage coil, cleaning the throttle, filtering the air and striking the spark plug, the situation has improved, but the low gear is still slightly frustrated, especially when the third gear is changed to the fourth gear. Depression is obvious, something will jump under the car. My driving experience is 65438+. After many tests and debugging, the symptoms are still .. I know that there are old spark plugs replaced by cars imported from Germany, thinking that they are all old anyway, and the imported ones are better than the domestic ones, so I changed them. Unexpectedly, it was a casual move, and I found the reason: the domestic spark plug has been used for a long time, and the gap is large. The trial run is all right. The sense of shifting and refueling disappeared immediately. It's done.