Under normal use, if the engine has a fault in the starter or battery, it will be difficult to start the engine, or even impossible to start. In this case, you must first understand the use of the starter and battery in order to roughly determine the fault location. If the battery has been used for more than 1 year, you should focus on checking its technical condition; if the battery has been used for a short time and the starter has not been repaired for a long time, you should start from the starter. Then, according to the fault phenomenon at the time of starting, the following inspections are carried out:
1.When starting, only the “click” sound of the starter electromagnetic switch is heard, or when the starter drives the crankshaft to rotate slowly for a few times during the first start, and then the starter electromagnetic switch “clicks”, but the crankshaft does not rotate. This phenomenon is generally a battery “break” fault.
2.The car can be started every time it is temporarily parked, but the crankshaft can only rotate once when it is parked for a long time or when it is started the next day. This phenomenon is a serious self-discharge of the battery, and its plates and separators are seriously aged, indicating that the battery is close to being scrapped.
3.When starting, the starter suddenly turns weakly, accompanied by the smell of burning rubber or smoke coming out of the battery. This is mostly caused by poor contact between the pole and the pole clamp, resulting in heat and burns.
4.If the starter drive gear and the engine flywheel ring gear make an idling sound when starting, there are two reasons: one is that the meshing cut-in surface of the flywheel ring gear is deformed; the other is that the gap between the starter drive gear and the flywheel ring gear 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 and rotates together. This kind of fault occurs, one is that the holding coil of the starter electromagnetic switch is wrongly connected to the power terminal; the other is that the three wires on the key switch are connected incorrectly. The judgment method is: when the key is in the “0” position, the starter drive gear does not rotate, and when it is in the “2” position, the starter motor drive gear meshes with the flywheel ring gear and rotates together.
6.The engine cannot start when the start switch is turned to the start position, and there are no other phenomena. This kind of fault is caused by the key or switch not connecting the starter circuit due to wear and tear; the starter relay not connecting the starter electromagnetic switch circuit; the power switch not connecting the main circuit.
7.When starting, there is only a slight “click” sound, and no other response. This is caused by the starter relay getting stuck. At this time, just press the tail of the electromagnet to force the electromagnet to move forward, and the starter circuit can be connected, so that the engine can be started.
