Check whether the diesel switch at the lower part of the diesel tank is open, and use the drain valve to drain the water and dirty oil in the diesel tank; Check and drain the water and dirty oil in the diesel filter and strainer...
If the diesel engine has insufficient power during operation, the following parts should be checked as appropriate: 1. Oil supply system a. Fuel system: carefully check whether the joints in the fuel system have oil leakage, whether the hoses have right angles, and whether the fuel filter is dirty or blocked. If the fuel passage is insufficient, the diesel engine must have insufficient power.
If the diesel engine emits black smoke during operation, the following parts should be inspected: 1. Air filter: if the air filter element is dirty, it will lead to insufficient air intake and serious black smoke from the diesel engine.... 2、供油系统 a、喷油泵：检查喷油泵油量是否太大，柱塞／出油阀是否严重磨损等...
If the diesel engine emits white smoke during operation, the following parts should be inspected: 1. Injection advance angle: if the injection advance angle is wrong, the time of fuel injection into the cylinder misses the best injection time. Because the pressure and temperature in the cylinder are too low, some cylinders do not work, and the fuel is discharged in fog, so the diesel engine emits white smoke...
1. Cylinder compression pressure: if there is a special tool to detect the cylinder compression pressure, the wear of the piston ring and cylinder liner of the cylinder can be confirmed by measuring the cylinder compression pressure...
If the vibration of the diesel engine is too large, the following parts should be checked: 1. Diesel engine rubber shock absorber support: if the support is loose or damaged, the diesel engine must vibrate greatly...
When the diesel engine deflagration, the pressure in the cylinder suddenly increases, and the piston hits the cylinder liner violently, causing great metal knocking sound and vibration. 1. Check and adjust the oil supply advance angle The oil supply advance angle is too large...
Cause of failure: because there are many pressure seals in the engine, such as cylinder liner piston piston ring, turbocharger turbocharger rotor shaft, this seal generally plays its full role when the engine has about 1/3 load, and slight leakage may occur when the load is small, otherwise the following faults may occur...
The fuel filter is blocked, resulting in poor fuel supply; The fuel oil pipeline leaks, and air seeps into the oil inlet pipe; The engine air filter is blocked, resulting in poor air intake; The fuel temperature is too high...
The oil level of crankcase is too low or there is no oil; The engine coolant temperature is always maintained at a high temperature value, resulting in low oil viscosity; The oil pressure sensor is faulty...
Insufficient cooling capacity of the water tank due to insufficient coolant in the water tank; Too little or no oil in crankcase; Coolant temperature sensor failure, resulting in inaccurate or high detection value; The radiator ventilation duct is blocked, and the cooling air cannot flow normally, resulting in the reduction of the heat dissipation capacity of the water tank; The drive belt of the cooling fan is loose...
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