JAC Jiayue A5 is equipped with a 1.5-liter turbocharged four-cylinder engine across the entire lineup, with the model number HFC4GB2.4E. This engine delivers a maximum power of 110 kW and a maximum torque of 210 N·m. It features VVT technology and multi-point electronic fuel injection, and utilizes an aluminum alloy cylinder head and block. The engine in the JAC Jiayue A5 is domestically produced, developed and manufactured by JAC Motors. For daily maintenance of the JAC Jiayue A5 engine, the following methods can be employed: Use lubricating oil of appropriate quality grade. For gasoline engines, select SD to SF grade gasoline engine oil based on the additional devices in the intake and exhaust systems and usage conditions. For diesel engines, choose CB to CD grade diesel engine oil according to mechanical load, ensuring the standard meets or exceeds the manufacturer's requirements. Regularly change the engine oil and filter. The quality of any lubricating oil will degrade over time. After a certain mileage, its performance deteriorates, leading to various engine issues. To prevent malfunctions, change the oil periodically based on usage conditions and maintain an appropriate oil level. As oil passes through the fine pores of the filter, solid particles and viscous substances accumulate in the filter. If the filter becomes clogged and oil cannot pass through, it may rupture the filter or open the safety valve, allowing oil to bypass through the relief valve and carry contaminants back to the lubrication points, accelerating engine wear and increasing internal contamination. Periodically clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls. These mix with metal particles from component wear to form sludge. In small amounts, the sludge remains suspended in the oil, but in larger quantities, it precipitates, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use radiator cleaner to flush the radiator. Removing rust and scale deposits not only ensures the engine operates smoothly but also extends the overall lifespan of the radiator and engine.
