The car won't catch fire and won't start! What is the reason?

The first type: no oil.

If your car is low in fuel, or the fuel gauge shows that it is lower than the red line, it will naturally fail to catch fire. When you find that the car won't catch fire, you should look at the oil meter at the first time to see if there is any oil. In addition, don't wait until the tank bottoms out before refueling. This will not only affect the life of the engine, but also affect the life of the oil pump, and even the oil pump will be dangerous to work without oil.

Type II: Crankshaft position sensor failure.

Crankshaft position sensor is the most important sensor in EFI engine, especially in centralized control system, and it is also used in ignition system and fuel injection system. The function of the crankshaft position sensor is to monitor the position of the crankshaft so that the engine computer can sense the speed signal. If the crankshaft position sensor fails, the computer can't monitor the speed signal, so it can't judge whether you are igniting or not, and it won't catch fire.

The third type: starter

If the car encounters these problems, I suggest you check whether the starter is faulty: First, the starter rotates at high speed when the ignition switch is pressed, but the engine just doesn't respond. This question is actually very simple. It is basically certain that the problem lies in the starter. As mentioned above, the kinetic energy of DC engine is not enough, and the kinetic energy is transmitted to the engine by the transmission mechanism through the driving gear, so the problem must be in this transmission process. Generally, it is caused by the wear of the driving gear. The second is to press the ignition switch, but even the starter does not move. This usually means that there is something wrong with the line. The battery-powered power cord may be burnt out, or the starting relay may be damaged.

Fourth: the battery is dead.

The automobile battery is dead due to long-term parking, the service life of the automobile battery has reached, the generator is damaged, the electrolyte is insufficient or leaked, the fuse is blown, the pile head of the automobile battery is corroded, and the battery is overused. In addition, install xenon headlights, high-power audio, DVD, etc. It is also the cause of vehicle circuit failure. It's easy to check whether the car is dead. Just honk the horn.

Fifth: too much carbon deposit.

Too much carbon deposit will lead to poor ignition of spark plug, lax valve and poor fuel injection from nozzle, which will lead to fire, weak acceleration, machine jitter and serious misfire. Too much carbon deposition in the throttle will lead to air circulation, and there will be no fire without air coming in. In the case of too much carbon deposition in the throttle, you can try a little oil, which may lead to a smooth ignition.