What causes abnormal noise and failure to start when igniting the car?

[MacAlexandra]

The reasons for abnormal noise and failure to start when igniting the car are: 1. Excessive carbon buildup in the throttle; 2. The car is out of fuel; 3. The battery is low on power; 4. Poor fuel quality; 5. No antifreeze added. The solutions for a car that won't start are: 1. Check if the car battery is low on power; 2. Check if the ignition system is faulty; 3. Clean the engine; 4. Replace the starter. The correct steps to ignite a car are: 1. Insert the key and turn it to ACC, wait for about 2 to 3 seconds to allow the main power relay contacts to stabilize; 2. Turn the key to ON and wait for 6 to 10 seconds to allow the fuel pump relay to engage; 3. Turn the key to START until the engine runs continuously, then return it to ON.