The cause of engine jitter (abnormal oil supply system) :
Fuel pump: The function is to deliver high pressure fuel to the oil dividing line to ensure a continuous supply of fuel to the fuel injection nozzle. When the fuel pump failure, will lead to oil pressure fluctuation, resulting in engine running instability. Check this problem mainly depends on the fuel pressure gauge, in the process of testing, connect the fuel pressure gauge to the oil splitting pipe, idle the engine and observe the pressure value at this time, through the numerical change can be preliminary judge whether there is a problem in the oil supply system.
When the fuel injection pressure is determined, the level of fuel pressure will directly affect the amount of fuel injection, but also affect the concentration of mixed gas. The tank also has a channel connected to the activated charcoal tank, which absorbs the fuel vapor. The concentration of the mixture is also affected by the transfer of the fuel vapor to the gas line through the control of the solenoid valve.
Nozzle: With the increase of the number of times the nozzle may appear blockage or leakage problems, maintaining good driving habits can reduce the generation of carbon deposition. When the nozzle of a cylinder has problems, it will lead to the output of each cylinder is not consistent, so there is jitter. The nozzle should be kept clean, and can be cleaned or replaced regularly if necessary to ensure a good atomization state when spraying oil. To judge the quality of the nozzle, it is necessary for professional maintenance personnel to reach a conclusion through the test bench, and the usual method is "oil break".
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