What should I do if the field engine vibrates too much?

Hello: According to your fault description, it may be mainly caused by excessive carbon deposition in throttle, idle motor, air intake, air intake valve and combustion chamber. Due to too much carbon and dirt in the air inlet, the cross-sectional area of the air passage changes, which makes the control unit unable to accurately control the idle intake air volume, resulting in too rich or too thin air mixture, abnormal combustion or engine jitter, and even unable to start after starting. At the same time, it is also necessary to check the working state of the fuel injector to see if the pulse width of the fuel injection is up to standard. It is recommended that you conduct a field trip based on the above analysis.