Reasons Why the Engine Fails to Start

[VanMaya]

There are many reasons why an engine may fail to start. Possible causes include an empty fuel tank, a faulty fuel pump, incorrect timing, malfunctioning crankshaft or camshaft position sensors, issues with the anti-theft system, or a faulty starter. It is recommended to have the vehicle inspected and repaired at a 4S shop. Below are methods for diagnosing engine abnormalities: 1. Check the battery: Under normal engine conditions, issues with the starter or battery can make it difficult to start the engine. In such cases, the first step is to understand the usage history of the starter and battery to roughly identify the faulty component. It is essential to determine whether the engine's failure to start is due to insufficient battery charge. 2. Inspect the starting system: When the engine fails to start, the first task is to check the electrical circuits in the engine starting system. The starting system typically includes the battery, starter motor, and connecting cables, among other components. Additionally, the ignition switch, starter relay or solenoid, and the vehicle's anti-theft system are also critical parts of the starting system. 3. Diagnose the fuel system: The diagnosis of the fuel system can be divided into two parts: the fuel supply system and the fuel injector circuit system. The fuel supply system can be tested by measuring fuel flow and pressure. The best way to measure fuel flow is to test the fuel supply line under load.