What's with the engine backfire?

What do you want to know about "engine tempering"? The relevant contents are as follows:

Engine backfire reason:

1. If there is air leakage in the intake system of the engine, it will lead to more intake air, but the ECU of the engine can't supply oil according to the actual intake air, resulting in more intake air, less oil and too thin mixture, leading to tempering. Technicians can use a vacuum gauge to measure the pressure of the air intake system to judge the fault point;

2. If the oil pressure of the oil pump is low or the gasoline filter element is blocked, the actual fuel injection quantity of the automobile will be reduced, the mixture will still be too thin, and the throttle will still be backfired;

3. You can use the oil pressure gauge to measure the pressure of the oil pump. If the pressure is normal, replace the gasoline filter. Of course, in the order from simple to difficult, you should replace the gasoline filter first, and then test the oil pump. Million car purchase subsidy