Qichen d50. There is no speed. vibrate

Hello, according to what you said, I suggest you do a tee cleaning, including throttle, nozzle and air inlet. Jitter is caused by unstable idle speed caused by dirty throttle, excessive carbon deposition in fuel injector, uneven atomization of fuel injection, and poor air intake caused by dirty air inlet, all of which will lead to your doubts. Therefore, it is generally more than 200 yuan to do three-way cleaning. I hope my answer is helpful to you, and I wish you a happy life. 4S shop professional technician, 10 minutes to solve.