Why is there no high pressure fire in the engine ignition system?

The ignition system is a major system of a gasoline engine. The operating condition of the ignition system directly affects engine performance. Therefore, a reliable and precise ignition system is the goal people pursue. However, as the operating time of the ignition system increases, many faults occur in the ignition system, including premature ignition, too late ignition and spark plug failure. Engine firecrackers and explosions, engine knocking, failure to start the engine, unstable engine operation and reduced engine power, increased fuel consumption, poor acceleration, incorrect ignition timing, misfires of individual cylinders, etc. 1 Premature ignition fault repair and diagnosis phenomenon: the engine does not work properly, there is reverse rotation when the engine starts, and there is deflagration at idle and rapid acceleration, this means premature ignition. Troubleshooting method: Connect the spark tester and set the spark timing to the specified value. 2 Delayed ignition fault repair phenomenon: the engine is choking, overheated and weak, black smoke comes out of the exhaust pipe, or the carburetor backfires, or the carburetor backfires, which means that the ignition is too late. Troubleshooting method: Connect the ignition tester and adjust the ignition advance angle to the specified value 3. The engine cannot start or is difficult to start.