1. Check the battery

The battery is the most common cause of a car engine not starting. Check the battery terminals for corrosion, and make sure the cables are tightly connected. If the battery is dead, you can jump-start the car or replace the battery.

2. Check the starter

The starter is the component that turns the engine over. If the starter is not working, the engine will not start. Check the starter for any loose connections or damaged wires. If the starter is faulty, you will need to replace it.

3. Check the fuel system

The fuel system delivers fuel to the engine. If the fuel system is not working, the engine will not be able to start. Check the fuel lines for leaks, and make sure the fuel filter is not clogged. If the fuel system is faulty, you will need to repair or replace it.

4. Check the ignition system

The ignition system creates the spark that ignites the fuel in the engine. If the ignition system is not working, the engine will not start. Check the spark plugs for wear, and make sure the ignition wires are properly connected. If the ignition system is faulty, you will need to repair or replace it.

5. Check the compression

The compression in the engine is what creates the power to turn the crankshaft. If the compression is too low, the engine will not be able to start. You can check the compression by using a compression tester. If the compression is too low, you will need to rebuild the engine.

6. Check the timing belt

The timing belt keeps the engine’s valves and pistons synchronized. If the timing belt breaks, the engine will not be able to run. Check the timing belt for any cracks or tears, and replace it if necessary.

7. Check the computer

The computer controls the engine’s various systems. If the computer is not working, the engine will not start. Check the computer for any loose connections or damaged wires. If the computer is faulty, you will need to replace it.