What Causes a Gasoline Engine to Shut Down When Overheated?
1 Answers
Gasoline engine shutdown due to overheating may be caused by excessively small valve clearance. The maintenance methods for automobile engines are as follows: 1. Use lubricating oil of appropriate quality grade: For gasoline engines, SD-SF grade gasoline engine oil should be selected based on the additional equipment of the intake and exhaust systems and usage conditions; for diesel engines, CB-CD grade diesel engine oil should be selected according to mechanical load, with the selection standard not lower than the manufacturer's specified requirements. 2. Regularly change the oil and filter: The quality of any grade of lubricating oil will change during use. To avoid malfunctions, change the oil regularly according to usage conditions and maintain an appropriate oil level (generally up to the upper limit of the oil dipstick). 3. Maintain good crankcase ventilation: Most gasoline engines are now equipped with a PCV valve (Positive Crankcase Ventilation), but pollutants from blow-by gases can deposit around the PCV valve, potentially clogging it. Therefore, it is necessary to regularly clean the pollutants around the PCV valve. 4. Regularly 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, mixing with metal powder from component wear to form sludge. Therefore, the crankcase should be cleaned regularly to maintain cleanliness inside the engine.
