What Are the Reasons for a Car Battery Having Power but Failing to Start?
3 Answers
Possible reasons for a car having power but failing to start include: untimely lubrication of friction surfaces, damage to the cylinder wall lubricating oil film, and excessively low vehicle water temperature. Below are the relevant details: 1. Damage to the cylinder wall lubricating oil film: Due to low temperatures, gasoline atomization becomes difficult, causing some unatomized fuel to enter the cylinder in liquid form, washing away the residual oil film on the cylinder wall. This deteriorates the lubrication conditions between the cylinder wall and piston rings, leading to a sharp increase in wear. 2. Corrosion by acidic substances: Before the engine reaches normal operating temperature, sulfur compounds produced by gasoline combustion combine with water vapor condensing on the cylinder to form acidic substances. These corrode the cylinder wall and piston rings, accelerating wear. The lower the engine's operating temperature, the more severe the wear becomes.
I've driven quite a few cars and accumulated some experience over the years. Previously, when encountering situations where the battery shows power but the car won't start, it's usually a problem with the starter motor - it's turning but the engine just won't move. It could also be caused by old spark plugs with carbon buildup preventing ignition, or a faulty crankshaft position sensor making the computer system unable to determine when to spark. Sometimes it's the fuel pump not working - the tank is full but no fuel is being delivered. I suggest checking if the battery terminals are loose or corroded, but don't mess around carelessly to avoid electric shock. It's best to have a professional auto repair shop diagnose it - towing services aren't expensive either. Regular oil and filter changes can prevent many problems - safety first, you know.
As someone with some interest in automotive mechanics, I've researched this phenomenon. When the battery voltage is normal but the engine won't start, the cause mostly lies in the electrical system. It could be a faulty ignition coil, preventing current from reaching the spark plugs and igniting the fuel. Or there might be insufficient fuel pressure due to a malfunctioning fuel pump motor. Faulty sensors like the camshaft position sensor can disrupt signals to the ECU. Using a simple OBD scanner to check error codes can help identify the issue. Avoid disassembling components yourself to prevent short circuits. Developing good habits like not running the fuel tank dry when refueling can extend component lifespan.
