"What is the reason for the acceleration jitter of Mitsubishi 4g64 engine?"

The situation described by your good friend, first of all, should consider measuring the pressure, not measuring the fuel pressure, whether to consider replacing the fuel filter to check that the impact of the spark plug is within the normal range, or doing routine cleaning and maintenance of the throttle nozzle, which can generally be effectively solved and improved. The purpose of this is to effectively improve the accuracy of air-fuel ratio control by the engine control system. So as to improve the sufficiency of combustion and the stability of power output, which is a very necessary basic inspection and maintenance project. I hope the above analysis and answers can help you, and feel free to contact me if you have any questions.