[Auto Parts Expo] Common Causes Of Engine Failure To Start
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Brand Name: | Huibo Exhibition, Guangrao Tire Exhibition |
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[Auto Parts Expo] Common Causes Of Engine Failure To Start
Under normal engine conditions, a faulty starter or battery will make it difficult or impossible to start the engine. In this case, we must first understand the use of the starter and the battery in order to roughly determine the fault location. If the battery has been used for more than one year, its technical condition should be checked. If the battery is used for a short time and the starter has not been repaired for a long time, it should be checked from the starter.
China auto parts fair introduces you to the common reasons that the engine fails to start / cannot start, and then analyzes and handles according to the failure phenomenon during the start:
1. When starting, only the starter electromagnetic switch “cuckling” sound is heard, or when the starter starts for the first time, the crankshaft slowly rotates a few times, and then the starter electromagnetic switch “chucks”, but the crankshaft does not rotate. This phenomenon generally belongs to the "broken grid" failure of the battery.
2. Temporary parking can be started every time, but when the parking time is long or the next day, the crankshaft can only be turned. This phenomenon is a serious self-discharge of the battery, and its plates and separators are seriously aging, indicating that the battery is approaching scrap.
3. The starter suddenly turned weak during startup, accompanied by the smell of burning rubber or smoke from the battery. The china auto parts trade show believed that most of the poles and pole clips had poor contact Fever burned.
4. If the starter drive gear and the engine flywheel ring gear make an idling sound when starting, the Mercedes-Benz truck repairs have two reasons: the first is the deformation of the meshing cut-in surface of the flywheel ring gear; The gap is too large. The two cannot mesh and the engine cannot start.
5. As soon as the main power switch is turned on, the starter drive gear meshes with the flywheel ring gear to rotate. If this kind of failure occurs, one is that the holding coil of the electromagnetic switch of the starter is incorrectly connected to the power terminal; the other is that the three wires of the key switch are incorrectly connected. The judgment method is: the starter drives the gear when the key is in the "0" position Do not rotate. When in the "2" position, start the motor to drive the gear to rotate with the meshing of the flywheel ring gear.
6. The start switch is turned to the start position. The engine cannot start and there is no other phenomenon. The auto parts expo believes that this kind of failure is that one is that the keys and switches are not turned on due to wear; the other is that the starter relay is not turned on; the starter electromagnetic switch circuit is not connected; Circuit.
7. There is only a slight "click" when starting, and there is no response, which is caused by the starting relay card. Mercedes-Benz truck maintenance introduction At this time, as long as the electromagnet is pressed once to force the electromagnet to move forward, the starting circuit can be switched on, thereby starting the engine.
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