1. Use the filter paper with low DU price to make the filter element. Due to the large aperture of the filter paper, poor uniformity DAO and low filtration efficiency, the harmful impurities to the engine cannot be effectively filtered, resulting in early wear of the engine. 2. Use low quality adhesive, and the amount is very small, neither oil resistant, and can not be firmly bonded, resulting in...

Piston spring of oil supply pump breaks The engine flamed out during operation and could not be started.After unscrewing the air release screw, it is found that the low pressure oil chamber of the fuel injection pump has no or very little fuel. Pump oil with the hand pump until the whole low pressure oil chamber is filled with oil, exhaust the air, restart the engine, and the engine returns to nor...

Piston spring of oil supply pump breaks The engine flamed out during operation and could not be started.After unscrewing the air release screw, it is found that the low pressure oil chamber of the fuel injection pump has no or very little fuel. Pump oil with the hand pump until the whole low pressure oil chamber is filled with oil, exhaust the air, restart the engine, and the engine returns to nor...

Low pressure oil supply is not smooth Diesel engine from the fuel tank to the fuel pump inlet cavity in between, back to belong to the low pressure oil pipe line, when the pipe joint, washer and tubing oil due to damage, will make the air into the oil produces gas resistance, leading to poor drainage, difficulty in starting and accelerating engine slow fault phenomena, such as serious shut down au...

Look at the phenomenon, check the circuit For electronically controlled diesel engines, the following two conditions will also lead to diesel engine power shortage.Thermal protection: If the temperature of the electronically controlled diesel engine is abnormal, the temperature of the coolant may be too high;High intake temperature;Fuel temperature is too high;Coolant temperature sensor circuit fa...

Look at the pressure, check for leaks Pressure gauge can be used to measure the cylinder pressure, find out the poor sealing cylinder.Reasons for poor cylinder sealing: valve clearance or clearance is too small, piston and cylinder sleeve and piston ring end face clearance is too large, ring groove carbon.In the diesel engine work, if close to the air filter can hear the "hiss, hiss" blowing sound...

Water temperature, check cooling If the cooling system temperature of the diesel engine is too high (more than 100℃) during operation, it can indicate that the scale in the cooling water cavity of the diesel engine is too thick or that relevant components of the cooling system (thermostat, water pump, fan, etc.) are inefficient or fail. Look at the distribution and check the phase After a long per...

Look at the carbon, check the working condition The carbon accumulation in the exhaust port of diesel engine is black gray, and the surface is covered with a layer of white frost. The carbon accumulation layer is very thin, which indicates that the diesel engine works well.The charcoal color is black and not wet, indicating that the diesel engine burns oil slightly.The thick carbon accumulation in...