What Causes the Oil Light to Stay On and the Engine to Fail to Start?
2 Answers
The reasons for the oil light staying on and the engine failing to start are as follows: 1. Faulty false alarm: The so-called faulty false alarm mainly refers to the failure of the oil pressure sensor—the oil pressure switch. This means the sensor itself, which is originally used to detect the engine oil pressure, malfunctions. 2. Engine sludge: Engine sludge is sometimes related to the oil light staying on. It is quite easy to understand—large chunks of sludge formed in the engine can easily clog the oil pump filter screen (oil pickup) in the oil pan, leading to low oil pressure. Additionally, engine sludge can cause the oil to deteriorate or change in viscosity. If the oil viscosity becomes too high, it may also trigger the oil light alarm.
The oil light is on and the car won't start, which is worrying me. The same thing happened last time I drove my old car. First, consider insufficient oil level, possibly due to oil leakage or burning oil causing low oil pressure. After the warning light comes on, the engine protection system will prevent starting to avoid damage. Another common reason is a dead battery; when the power is insufficient, the dashboard lights may come on but the car won't start. Check the oil dipstick—if it's dry, add oil immediately. Also, check the battery voltage. Forcing a start will damage the engine faster, so don't push it—call a tow truck or get a professional inspection. Develop regular maintenance habits, such as checking the oil every three months, to reduce such troubles.
