What is the reason for the accidental fire failure on the way of Delong m3000LNG vehicle?

The so-called intermittent misfire means that the engine can run continuously, but accidental and short-term misfires often occur during the operation. Its specific performance is that the engine will often shake suddenly in different degrees during operation, and sometimes the fault warning light of the engine will light up. When the number of fire breaks is small, it usually does not affect the normal running of the car; Frequent flameout will lead to engine power decline or poor acceleration. The causes of intermittent misfire can be divided into primary circuit (low voltage circuit) failure and secondary circuit (high voltage circuit) failure of ignition system. The primary circuit failure that will lead to intermittent fire is mainly the poor contact of the ignition system, such as the circuit from the crankshaft position sensor to the computer, the circuit from the computer to the ignition controller, and the circuit between the ignition controller (ignition module) and the ignition coil. The secondary circuit faults that lead to intermittent fire mainly include poor performance of high voltage coil, abnormal resistance of high voltage line, poor insulation of ignition head, etc., and also cause intermittent fire and secondary circuit leakage. If my answer is helpful to you, please set it as the best answer. thank you