What is the low idle speed of Baojun 730 cold car?

The reasons for the low idle speed of Baojun 730 cold car in Pacific Auto Network are: 1, the throttle valve is filled with oil and carbon, and the intake air is not clean; 2. The spark plugs caused by individual spark plug failures are too weak; 3. Common problems include idle speed control valve failure, poor atomization or blockage of injector, and oil viscosity change.

When adjusting idle speed, it must be carried out under normal conditions such as normal engine temperature, proper valve clearance, normal ignition system, good sealing of all pipelines, full throttle opening and tight throttle closing. When adjusting, first loosen the throttle opening adjustment screw to make the engine reach the lowest stable speed. Screw in the idle speed adjusting screw with a screwdriver, so that when the engine is about to turn off, screw it out slowly to make it run smoothly and reach high speed, and then screw out the throttle opening adjusting screw to minimize the engine speed. Then adjust the idle adjustment screw to increase the engine speed. Repeat this process until the throttle opening is minimum (close) and the engine is running at the lowest stable speed. Finally, increase the speed and suddenly close the throttle, so that the engine can still turn without stalling.

When the idle speed of Baojun 730 engine is too high, start the engine first, and then control the throttle arm to close the throttle by hand. If the idle speed is normal at this time, it means that the throttle tension spring is too soft and should be replaced. If closing the throttle valve by hand is ineffective, check whether the throttle shaft is loose or whether the throttle valve is closed tightly. If the throttle valve is not tightly closed or the throttle shaft is loose, please repair it. If the throttle valve is normal, check whether there is slight air leakage under the throttle valve. If there is, eliminate the air leakage. If not, further adjust the idle speed until the idle speed is appropriate.

When adjusting idle speed, it must be carried out under normal conditions such as normal engine temperature, proper valve clearance, normal ignition system, good sealing of all pipelines, full throttle opening and tight throttle closing. When adjusting, first loosen the throttle opening adjustment screw to make the engine reach the lowest stable speed. Screw in the idle speed adjusting screw with a screwdriver, so that when the engine is about to turn off, screw it out slowly to make it run smoothly and reach high speed, and then screw out the throttle opening adjusting screw to minimize the engine speed. Then adjust the idle adjustment screw to increase the engine speed. Repeat this process until the throttle opening is minimum (close) and the engine is running at the lowest stable speed. Finally, increase the speed and suddenly close the throttle, so that the engine can still turn without stalling.

Abnormal sound of Baojun 730 engine. In this case, first of all, the relationship between abnormal sound and cylinder position should be found out by single cylinder fire-breaking method. If the abnormal sound has nothing to do with the cylinder position, the relationship between the abnormal sound and the engine working cycle should be found out cylinder by cylinder to determine which mechanism part the abnormal sound comes from. Then, the experiment of gradually increasing the engine speed is carried out, and the change of abnormal sound is listened. In addition, we should pay attention to the influence of the degree of fall. In this way, the relationship between abnormal sound and engine load, working cycle, speed and temperature can be found. So as to know the characteristics of abnormal sound, and if it conforms to the characteristics of a certain abnormal sound, we can draw a conclusion. Abnormal noise of automobile engine is a serious problem, so we should find out the cause and eliminate the fault as soon as possible to avoid the difficulty in ensuring driving safety.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)