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Several situations where the engine cannot be started and solutions

10-02

Several situations where the engine cannot be started and solutions

1. If the start switch is turned to the S position, the engine does not respond

Check the starting circuit, fuses, relays, batteries and wiring, starting switches. For automatic transmission cars, check whether the shift lever is in the P / N position.


2. If you turn the start switch to the S position, you only hear the "click" sound from the starter, and the engine still does not rotate.
① Check the battery voltage and wiring
② Check the working condition of the suction coil and holding coil of the starter

③ Check whether the crankshaft of the engine is locked.



3. Only the starter is idling, the engine is not spinning
Check the operation of the suction coil and holding coil of the starter, and check the starter pinion and one-way clutch.


4. If the start switch is turned to the S position, the engine speed is weak and cannot be started (200r / min)

Check the battery and starter



5. If the start switch is turned to the S position, the engine will start, but once the hand is released, the engine will stop when the ignition switch returns to the ON position.

Bad start switch



6. If the starter drives the engine very strongly (over 200r / min), but the engine still cannot start
① Use the instrument or self-diagnostic system to detect the fault code
② Check the ignition circuit
检查有无跳火 Check for flashover

将火花塞高压线或中央高压线拔出,让其在离搭铁5~8mm处试火。 Unplug the spark plug high-voltage wire or the central high-voltage wire and let it test fire 5 ~ 8mm away from the ground. 发动机转速传感器、曲轴位置/凸轮轴位置传感器的信号输出及线路情况 If there is no fire, first check: signal output and wiring of engine speed sensor, crankshaft position / camshaft position sensor


③ Check the oil supply system
若不润湿则检查以下项目 Check the spark plug's wetting condition. If it is wet, it means oil supply to the oil circuit. If it is not wet, check the following items.
汽油泵工作情况,通电、油压 Gas pump working conditions, electricity, oil pressure
喷油器电路及工作情况 Injector circuit and working conditions
油路是否畅通,油箱是否有油 Whether the oil circuit is smooth and whether there is oil in the fuel tank
④ Check the timing of gas distribution

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