What's the reason for the engine failing to start?
2 Answers
Engine failure to start is mainly due to: 1. Vehicle electrical circuit malfunction or dead battery. Solution: Check for vehicle electrical circuit issues. If the battery is dead, charge it promptly or replace the battery. 2. Faulty ignition coil or spark plugs. The ignition coil is primarily responsible for converting low voltage to high voltage, thereby driving the spark plugs to discharge and ignite. If the ignition coil or spark plugs malfunction, it may lead to difficulty in starting the engine or complete failure to start. Solution: Replace the ignition coil and spark plugs. 3. Fuel system malfunction, such as a damaged fuel pump or an empty fuel tank, can also prevent the engine from starting. Solution: Inspect the fuel system for faults. If the fuel pump is damaged, replace it. If the fuel tank is empty, refuel it to the full level.
Last time my car suddenly wouldn't start, and I was sweating with anxiety! Actually, most engine failures come down to these few issues: The battery is the prime suspect - either it's old and drained, or you left the lights on and drained it completely. A jump start can test this. If the starter motor won't turn, you'll either hear clicking sounds or get no response at all. Fuel system problems are also easy to diagnose - listen for the fuel pump's humming sound when turning the key; if it's gone, either the fuel pump or filter is clogged. For older cars, check the spark plugs too - take them out to see if the electrodes are blackened. The most troublesome is a faulty crankshaft position sensor - the ECU cuts fuel and power when it can't receive signals. In an emergency, don't keep cranking the key - first pop the hood to check for loose connections. If possible, using a diagnostic tool to read trouble codes is the easiest solution.
