What are the reasons for engine failure to start?
2 Answers
Engine failure to start can be caused by: 1. Starting system failure, such as insufficient battery power, damaged starter, or starter circuit malfunction; 2. Engine mechanical system failure, such as intake pipe leakage, poor sealing between piston and cylinder, improper valve closure, excessive carbon buildup on intake valves and intake pipes, leading to injected gasoline being absorbed by carbon deposits and unable to enter the combustion chamber; 3. Engine management system failure, such as weak rotation sensor signal, incorrect water temperature signal, or poor line contact; 4. Ignition system failure, such as excessive carbon buildup or incorrect gap on spark plugs, leakage in high-voltage lines, or damaged ignition coils; 5. Fuel supply system failure, such as insufficient pressure retention, fuel injector leakage, or blockage.
My car wouldn’t start in the parking lot last week—it was so frustrating. My first thought was the most common issue: a dead battery. An aging battery or lights left on can drain the power, leaving the engine without enough cranking speed. Or maybe the starter motor was faulty, producing only clicking sounds without turning the engine. Wet or carbon-fouled spark plugs can also prevent ignition, especially in humid weather. If the fuel pump fails or the tank is empty, fuel won’t reach the engine, and the car simply won’t start. Now, I keep a portable charger in my car just in case the battery dies—jumper cables can save the day. For more complex issues, a professional repair shop is necessary. Regular checks on battery health and terminals help avoid such embarrassing situations, as a healthy car is key to daily convenience.
