What causes the Roewe 550 idling jitter?

Idle jitter of Roewe 550 engine is usually caused by the following conditions:

1, the vehicle's jitter in idle state is mostly caused by dirty throttle or excessive carbon deposition in fuel injector. When there is too much carbon deposit in the engine, the gasoline sprayed from the fuel nozzle will be absorbed by the carbon deposit, which will lead to the lean concentration of the oil-gas mixture entering the combustion chamber, which will make it difficult to start the engine.

2. The failure of the ignition system, such as poor working of the ignition system and sparking of the spark plug, will also lead to this failure. It is relatively easy to check the ignition system. You only need to check whether there is carbon deposit in the spark plug. If there is, you only need to replace it with a new one.

3. If the idling jitter still exists after cleaning the engine carbon deposit and the throttle valve, nozzle and spark plug, it is recommended to go to a repair shop or 4S shop to check whether the fuel pressure is within the normal range and whether the intake pressure sensor is damaged.

If it is found that the oil supply pressure of the oil pump is abnormal or the intake pressure sensor is damaged, then the body shake is mostly caused by the fault here, and it should be repaired and replaced in time.

4. In addition to the above possible reasons, the body shake at idle speed may also be related to the aging of engine feet (also known as claw pads). The engine foot is located between the body and the engine, which is a part of the automobile engine damping system and is responsible for absorbing the slight jitter when the engine is running. If there is something wrong with the engine foot, its damping effect will be reduced, resulting in the body shaking at idle speed.