Is the lead engine jitter normal?

There are many reasons for engine jitter, including low engine temperature, serious carbon deposition, engine cylinder shortage, spark plug failure and so on. The following is a detailed analysis. 1. Low engine temperature: When the car is cold-started, because the engine temperature is low, it does not reach the normal working temperature, so the engine will have idling jitter. This phenomenon is normal, just wait until the engine temperature rises. 2. Serious engine carbon deposition: When the engine carbon deposition is serious, the oil circuit of the engine will be blocked, so that the fuel and mixture can not burn normally, resulting in engine jitter. In this case, it is necessary to clean up the carbon deposit in the engine in time to avoid other problems such as increased fuel consumption and insufficient power. 3. Engine cylinder missing: If one cylinder of the engine cannot work, it will affect the balance of the engine, which will naturally lead to engine jitter. This situation is more troublesome, and you need to go to a repair shop or 4s shop to find a professional to check and repair. 4. Spark plug failure: When the spark plug fails, the car can't ignite normally, the cylinder and piston can't work normally, and the engine will shake. In this case, the spark plug should be replaced in time.