Views : 11 Time : 2022-04-18 14:34:56
Diesel oil has not been sufficiently precipitated or filtered, and there are too many impurities.
The quality of the diesel filter element is poor and the filtering effect is poor.
When the temperature is high, diesel with too low viscosity is selected, and when the temperature is low, diesel with excessive viscosity is selected.
The fuel injection nozzle or the oil outlet valve is stuck in the closed position, the plunger is still pumping oil, and the plunger sleeve expands and deforms; or the gap between the plunger and the bottom surface of the oil outlet valve is too small, and the plunger hits the oil outlet valve due to the inertia of high-speed motion The bottom surface and the top surface touch the hair, resulting in strain and can not even return.
The installation of the plunger coupler is not vertical, and it is eccentrically worn. For example, the roller body swings, the gasket is uneven, the positioning screw is screwed in too much, and the plunger is worn out by the deflection movement.
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