What is the reason for the sudden flameout of old Santana during driving?

There is also carbon deposition leading to flameout, especially at the electronic throttle, which is an air intake failure. When the carbon deposit at the throttle is very large, it may turn off when the throttle is released during driving, which happens from time to time in some very old cars.

Because the throttle is loosened, there is only a small gap at the throttle to let the air pass. When there is too much carbon deposited in the gap, the amount of air passing through it is greatly reduced, which is not enough to maintain the mixture required for idling operation, it will turn off. However, this can be avoided. You can feel it when you light the fire. It's not easy to strike a fire, and you even need to step on the gas pedal to hit it. This is a sign of excessive carbon deposition in the throttle, which needs to be cleaned in time.

Extended information If the vehicle suddenly turns off during driving, of course, don't panic at first, try to stabilize the car and don't hit the direction, turn on the double flash, and brake slightly as appropriate. If it is a manual car, you can step on the clutch, hang the gear lever to the corresponding gear according to the vehicle speed, and then release the clutch to start the engine at the vehicle speed, which is similar to starting the engine with a big car, or you can restart the engine directly;

If it is an automatic car, first carefully shift the gear to neutral, and be careful not to shift to reverse gear (R gear) by mistake, otherwise the transmission will be damaged, and then restart the engine. Of course, you can also turn on the double jump light to park the vehicle and restart the engine. Then check the car condition according to the car condition. If you can't find out, you can only call the trailer for help.