1. Check the ignition coil: Ensure that the connectors are attached securely and that they are clean. Look for any signs of corrosion or damage. If the coil is faulty, replace it.
2. Check the ignition module: Test the ignition module using an oscilloscope to verify that it is providing the required signal to the coil. If the ignition module is faulty, replace it.
3. Check the distributor cap and rotor: Ensure that all the connections are secured properly and that there is no corrosion or damage. If the cap or the rotor is faulty, replace it.
4. Check the spark plug wires: Ensure they are connected securely and ensure they are not damaged or cracked. If any of the wires are faulty, replace them.
5. Check the fuel injector pulse: This can be done using an LED test light or a voltmeter. If there is no injector pulse, the issue may be with the injector driver in the ECM or a wiring issue.
6. Check the engine control module (ECM)/ PCM: This is the "brain" of the car, controlling ignition timing and injector pulse. If all the other components are functioning correctly, the ECM/PCM may be the issue.
7. Test the fuel pressure regulator: It could cause a lack of fuel pressure if faulty.
8. Check the fuel filter: A clogged fuel filter can limit the flow of fuel and cause starting issues.
9. Check the crankshaft and camshaft sensors: If these sensors are not functioning correctly, they can disrupt ignition timing and fuel injection.
10. Perform a scan of the car's computer system: This can provide additional information about the root cause of the problem.
Note: It's important to follow the diagnostic process systematically to identify the exact component or circuit that is responsible for the car not starting.
