I don't know if any motorists have had this experience. Their car cannot be started at once, and it always takes time to start again. What is it connected with? Is it because of battery? Is it a spark plug? Let's analyze this together.
The above two reasons can cause engine to not start, but there are a few unusual factors that can also cause engine to fail to start:
1. There is carbon on throttle
If there is a lot of carbon deposits on throttle, this will directly affect amount of intake air. Everyone knows that pressing accelerator pedal controls opening and closing of throttle, that is, it regulates amount of intake air. If intake air volume decreases, this will be natural. If he cannot start a fire, even if he can start a fire, power of engine will be very limited. The solution is also very simple, just remove carbon deposits on throttle.
2. The oil path is uneven
This can also be expressed in failure of fuel system. If oil circuit is changed, engine will not start. More precisely, if spark plug is faulty, it will directly lead to ignition failure, damage to fuel pump or blockage of oil circuit, etc., will lead to insufficient fuel supply, resulting in mixed gas concentration is too low, and it will be difficult for spark plug to ignite mixed gas so car won't start.
3. Fuel injector atomization effect is poor
This is most likely cause of secondary ignition. If it is a cold start, atomization effect of mixed gas sprayed by injector is not good, and a large amount of liquid fuel enters cylinder, which directly leads to gas mixture is too thick, then spark plug is difficult lights up and car won't start.
The above are infrequent causes that can cause a secondary fire. If you encounter it, I still suggest that you go to a repair shop to check and fix problem so that you do not encounter this situation on road.