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oil pressure gauge reading low
Reasons for low indication of oil pressure gauge:
1. The oil in the oil pan is insufficient or the oil is not replaced after long-term use, resulting in thinning of the oil and low oil pressure;
2. Vehicle overload or poor heat dissipation of the diesel engine itself causes the diesel engine to overheat, the oil temperature is too high, the oil becomes thin, and the oil pressure is too low;
3. The oil pressure gauge is damaged;
4. The oil pipe is cracked or the connection is loose;
5. The engine oil is diluted and the engine oil pressure is too low due to the wrong brand of engine oil, low viscosity, water leakage in the engine oil, diesel oil, etc;
6. Oil pump failure, such as clogged oil suction screen, insufficient oil supply of oil pump, damage and oil leakage of oil pump paper pad, resulting in low oil pressure, etc.
Whether the oil level is normal. If the oil loss is serious, the oil pressure will be too low. It is necessary to confirm whether the engine has external component leakage and internal leakage burning oil. In addition, low oil viscosity or poor oil quality will also lead to. Whether the oil pressure switch, engine harness and combination instrument are normal, that is, the engine oil pressure is measured within the standard range with the pressure gauge, and there is no low oil pressure. However, due to the problem of electrical components, the indicator light of the combination instrument lights up, indicating that the oil pressure is too low.
Precautions for automobile engine
Use lubricating oil of appropriate quality grade. For gasoline engine, sd-sf gasoline engine oil shall be selected according to the additional devices and service conditions of intake and exhaust system; For diesel engine, cb-cd diesel engine oil shall be selected according to the mechanical load, and the selection standard shall not be lower than the requirements specified by the manufacturer.Change the engine oil and filter element regularly. The quality of lubricating oil of any quality grade will change during use. In order to avoid failure, change the oil regularly in combination with the service conditions and make the oil quantity moderate.
Maintenance of lubrication system
Oil strainer. Clogged oil strainer will cause low oil pressure, which may cause engine damage in a short time. When the filter collector is too dirty, it should be cleaned or replaced. It must be clean and thorough, and ensure that the filter screen of the filter collector is intact and fixed. Otherwise, when the oil pump sucks in some particulate impurities, it will aggravate the wear of the oil pump or block the pressure limiting valve of the oil pump.When the oil pressure is too low, it is also necessary to carefully check the connecting oil pipe between the oil filter and the oil pump. If it is damaged, it should be replaced, and pay attention to replacing a new gasket.
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