What is the reason for the idling jitter of KIA K3 engine?
If KIA k3 runs at idle speed, body shake will cause:
1. The oil pressure is unstable. For example, the engine carbon deposit has been removed, the throttle valve has been cleaned, and the oil pad and spark plug have been replaced. , still found that the body is idling, it is recommended to go to the 4S shop to check the fuel supply pressure and intake pressure sensors. If the oil supply pressure of the oil pump is abnormal, or the value of the intake pressure sensor is wrong, the intake pressure sensor will not work well, which will lead to the body shaking.
Solution: Check the oil pressure and replace parts if necessary.
2. Engine parts or aging, such as engine foot aging, may lead to body jitter. The engine foot is actually the damping system of the engine. When the engine is running, the engine feet are responsible for absorbing slight vibration. If there is something wrong with the engine base, these vibrations will be transmitted to the steering wheel and cab.
Solution: the engine foot is aging, so it is recommended to replace it with a new one.
3. The engine throttle is too dirty or the fuel injector has too much carbon, which will lead to jitter. When there is too much carbon deposit, the gasoline sprayed by the cold start injector will be absorbed by a large amount of carbon deposit, which will lead to too thin mixture during cold start and difficult start. The gasoline adsorbed on the car carbon deposit after landing will be sucked into the cylinder for combustion by the vacuum suction of the engine, which will make the mixture rich, and the combustible mixture of the engine will be diluted and concentrated, resulting in idling jitter.
Solution: Clean the oil circuit, check whether the idle motor has carbon deposit and clean it.
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