What are the reasons for the engine not starting?
4 Answers
The reasons for the engine not starting are: 1. The starter has been used for too long, and the carbon brush is damaged; 2. The battery voltage is insufficient to start the starter; 3. The gasoline pump is damaged, resulting in no fuel supply; 4. The gear is in D gear and cannot be ignited and started; 5. The car engine speed sensor is damaged, causing the vehicle to have no high-voltage spark. The solutions for the engine not starting are: 1. Preheat when the temperature is low; 2. Ensure the sealing performance of the cylinder; 3. Remove the air in the fuel line; 4. Check all pipelines to see if the joints are not tight; 5. Disassemble the injector and clean the needle valve; 6. Check whether the battery circuit is short-circuited; 7. Add sufficient diesel to the fuel tank; 8. Replace the gasoline model used.
I've had several experiences where my car wouldn't start. The most common issue is a dead battery, such as forgetting to turn off the headlights or leaving the car unused for too long, leading to power loss—sometimes even the dashboard won't light up. Starter motor failure is another culprit, making a clicking sound but failing to start the engine, possibly due to worn brushes or poor wiring contact. Fuel system problems are also frequent, like running out of gas unnoticed or a burnt-out fuel pump failing to deliver fuel, making the engine feel like it's idling. Additionally, dirty or aged spark plugs in the ignition system are more prone to failure in cold weather. I make it a habit to regularly check for corroded battery terminals. For safety, avoid forcing multiple start attempts to prevent circuit damage. It's wise to keep an emergency kit handy, including jumper cables and a voltmeter, to easily diagnose basic issues.
I think the key to the engine not starting lies in the battery and starting system. When the battery voltage is too low, the starting current is insufficient. You can use a multimeter to check if it's below 12 volts. If the starter motor is aging, it won't turn when powered, accompanied by a humming sound, possibly due to worn-out carbon brushes or a short circuit in the motor coil. Fuel supply is also crucial; a clogged fuel filter or low fuel pressure can prevent the engine from getting fuel, which you can tell by the absence of ignition sounds from the engine. Ignition control issues, such as a faulty crankshaft position sensor, can affect the timing of the spark plugs. These components influence each other, so it's recommended to start with simple checks like the battery and wiring connections to avoid complex repairs. Regular maintenance can prevent 90% of failures.
If your car won't start, don't panic. First, check the battery indicator light. If it's flashing or not lit, it indicates low power or loose connections – I've solved this by cleaning the terminals. Fuel issues are common, like using the wrong fuel or a fuel pump failure; no sound from the fuel pump when turning the ignition is a telltale sign. Additionally, a triggered anti-theft system or weak key signal can prevent the engine from starting, requiring a system reboot. These checks are quick and safe. Avoid leaving your car in dangerous locations like highways – turn on hazard lights and seek professional help.
