What is the reason for the new car engine jitter?

The engine jitter of a new car may be caused by the aging or looseness of foot rubber, lack of cylinder, carbon deposition or cold start of a new car.

1, machine foot glue is aging or loose.

Foot glue is a rubber block between the engine and the frame. Its function is to reduce the vibration and buffer when the engine works and fix the engine. Once these feet are aged or loose, the engine jitter will be extremely obvious.

2. The engine stalled.

Engine cylinder shortage mainly refers to the abnormal operation of one or more cylinders of the engine, which is generally manifested as: the exhaust gas flow from the automobile is obviously intermittent, and the exhaust pipe is seriously shaken, and the engine jitter can be obviously felt, sometimes accompanied by sudden noise. This is mostly related to ignition coil failure.

3. Carbon deposition problem

Carbon deposition includes cylinder carbon deposition, throttle carbon deposition, spark plug carbon deposition, intake carbon deposition and so on. These positions are closely related to the power output of the engine. When there is too much carbon in the engine, the ignition energy of the automobile decreases and the intake efficiency decreases, which eventually leads to the symptoms of engine jitter and weak acceleration.

4, cold start

When the car is cold-started, the engine lubrication effect is poor, the oil fluidity is poor, and it is also viscous, so there will be abnormal noise of mechanical wear. When the car is cold-started, the coolant temperature is relatively low, the mixture is relatively thick, and insufficient combustion will lead to engine jitter. This is generally a normal phenomenon, and it will get better after a hot car.