- Dead battery: This is one of the most common reasons why cars won't start. If the battery doesn't have enough power to crank the engine, the engine won't start.
- Faulty starter: After an ignition switch is turned, the starter's job is to crank the engine. If the starter is not functioning properly, it will not be able to turn and start the engine.
- No gas: If the fuel tank is empty, the engine won't have any fuel to burn and the vehicle will not start.
- Bad ignition coil: The ignition coil supplies power to the spark plugs which ignites the fuel in the engine. If the ignition coil is faulty, it will not be able to provide the spark plugs with the necessary power, resulting in the engine not starting.
- Fuel pump: If the fuel pump is not working, the engine will not receive any fuel and will not be able to start.
- Clogged fuel filter: If the fuel filter is clogged, it will restrict the flow of fuel to the engine, causing it to not start.
- Failed crankshaft position sensor: The crankshaft position sensor sends a signal to the computer to tell it when to fire the spark plugs. If the crankshaft position sensor is not working, the computer will not know when to fire the spark plugs and the engine will not start.
- Clogged air filter: Clogged air filters restrict the flow of air into the engine. Without sufficient air, the engine won’t be able to generate the necessary power to start.
- Malfunctioning ECU (Engine Control Unit): The ECU is a significant part of the vehicle’s engine as it is the part responsible for controlling the ignition, fuel injection, and timing. If the ECU fails, it can lead to the vehicle failing to start.
