How to judge the quality of automobile idle motor

Check whether there is a fault code, if there is, find the cause of the fault according to the displayed fault code and prescribe the right medicine.

If the engine speed of a cylinder is basically unchanged when the high-voltage line is unplugged, it means that the cylinder is not working well or not. Check whether the spark plug or injector of the cylinder is faulty (listen carefully to the working sound of the injector of each cylinder when idling, if the working sound of the injector of each cylinder is uneven, it means that the injector of each cylinder is unevenly injected, and the injector should be removed, cleaned or replaced), and whether the control circuit of the injector is short-circuited.

Idle motor is an element to control the idle speed of automobile. When the engine is idling, it is called idling. Its function is to change the cross-sectional area of idle air passage according to the temperature and load when the engine is idling, so that the engine has the best idle speed under different working conditions.

Extended data:

Precautions for idling of automobile engine:

1, when the engine is idling, the idling speed should be adjusted according to the actual situation. After adjustment, if the fault disappears, it is improper adjustment of the idle screw.

2. After adjustment, if the fault cannot disappear, open the throttle to keep the engine running. Check the carburetor and intake manifold gasket for air leakage with cotton yarn or paper. If there is no air leakage, remove the idle metering hole for inspection, blow out the idle oil circuit at the same time, and then reassemble the test. If the fault disappears, the idle metering hole and idle oil circuit are blocked.

3. For carburetor equipped with idle stop valve, check whether the electromagnetic coil circuit of idle stop valve is normal. If the idle fuel-saving metering hole is blocked due to abnormal electromagnetic coil circuit, repair the idle stop valve.

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