* The clutch is not engaging. This is the most common cause of this problem. The clutch is what connects the engine to the transmission, and if it's not engaging, the engine won't be able to turn the wheels. There are a few things that can cause the clutch to not engage, such as a worn-out clutch disc, a broken pressure plate, or a faulty release bearing.
* The starter is not working properly. The starter is what cranks the engine over when you turn the key. If the starter is not working properly, it won't be able to turn the engine over, even if the clutch is engaging. There are a few things that can cause the starter to not work properly, such as a dead battery, a bad solenoid, or a worn-out starter motor.
* The ignition system is not working properly. The ignition system is what provides the spark that ignites the fuel in the engine. If the ignition system is not working properly, the engine won't be able to start, even if the clutch is engaging and the starter is working properly. There are a few things that can cause the ignition system to not work properly, such as a bad spark plug, a faulty ignition coil, or a broken distributor cap.
* The fuel system is not working properly. The fuel system is what delivers the fuel to the engine. If the fuel system is not working properly, the engine won't be able to start, even if the clutch is engaging, the starter is working properly, and the ignition system is working properly. There are a few things that can cause the fuel system to not work properly, such as a clogged fuel filter, a bad fuel pump, or a faulty fuel injector.
If you're not sure what's causing your Neon to not start, it's best to take it to a mechanic for diagnosis.
