Why does the car sometimes not start?

When I encountered the same problem, I simply removed the key and reinserted it. The manual seemed to have something to do with matching the key self-test and engine password, called the anti-theft function. That's probably the truth. It could be that the key doesn't have enough power or it could be a fault of Great Wall itself. Mine is a Great Wall h5 2.5 diesel four wheel drive and has done 36,000 miles. Hope this helps everyone as well. Sometimes don't treat a minor problem as a serious illness and go to the doctor, it will damage the car and cost money. If the system still does not start, try pressing the hand pump again. Air may have entered, which could cause ignition failure. Personal experience, I hope it will be useful to many cyclists. 2. The fuel injector is leaking, making the mixer in the cylindre too rich and the car cannot start. 3. The cylinder pressure is too low and the car cannot start. 4. The injection pressure of the injector is too low, causing the gasoline to be not well atomized, making the gasoline runny and unable to drive the car. The starter will not work if the battery is dead and it will not start the fire. It has nothing to do with the generator. The generator only produces electricity when the engine is running. I suggest you replace the battery, even if you don't need to replace it, just check it. This is probably the circuit. (First check whether the battery stake is in good contact and whether there is corrosion. If not, remove the battery stake and scrape it with a saw blade to clean the corrosion then reinstall- Remember to remove the ground wire first when disassembling, and install the positive wire first when disassembling.installation) Then check whether the ground wire and the car body are in good contact. The cause of the fault must be poor contact. The starting resistance of the cold car is important. If the contact is not good, the starting current cannot be achieved, so it is difficult to start. Hot car starting resistance is low. Although the contact is not good, the current is small. But it can sometimes start. it can't turn on because it can't make contact. When the carriage vibrates, it comes into contact. Satisfactory answer 2: I can only say that I disagree with the answer above. Starting a car is the same as our usual lighter. The problem is that you can't shoot, not that you can't shoot, so you can say that it has nothing to do with the battery. You need to ask yourself if the oil line is smooth and clean. and if the ignition is normal. More prespecifically, it depends if the third filter is replaced, and the other is to look at the ignition time @2019