Neutral waiting jitter phenomenon is very common, suggesting that the engine conditions are bad, idling jitter for many reasons are very complex, common have the following:
1. engine coke serious;
2. There is a problem with the ignition system;
3. Hydraulic instability;
4. engine foot aging;
5. Gasoline oil is not good.
Among them, the machine is a very common aging, but it is easy to be ignored. To 4S shop maintenance, the owner can be used to install the friendly APP to the engine to be an ECG, the car to do a detailed understanding, to avoid over-maintenance.
Detection method is very simple, the phone on the platform near the control (as shown below, different cars suitable for the release of different positions, as long as the smooth can), point start, gap measured 2 to 3 minutes.