1. Fuel Delivery Issue:
- Check the fuel lines for any leaks or blockages.
- Ensure the fuel pump is functioning correctly.
- Inspect the fuel filter and replace if necessary.
2. Air Flow Issues:
- Verify that the air intake is clear and not obstructed.
- Clean the air filter if it's dirty.
- Check for any vacuum leaks in the air intake system.
3. Spark Plugs and Wires:
- Make sure the spark plugs are properly gapped and seated correctly.
- Check the spark plug wires for any damage or cracks.
- Ensure the distributor cap and rotor (if applicable) are in good condition.
4. Ignition System:
- Verify that the ignition coil is functioning properly.
- Check the ignition module/distributor for any issues.
- Ensure the ignition timing is correct.
5. Computer/ECU:
- If your vehicle has an Engine Control Unit (ECU), there could be an issue with the programming or sensors.
- Scan for any diagnostic trouble codes (DTCs) to identify potential issues.
6. Starter:
- Although you mentioned the engine is turning over, it's worth double-checking the starter.
- Ensure the starter is engaging properly with the flywheel and is receiving sufficient power.
If you have already replaced the battery, coils, and ignition module, it is recommended to have the vehicle diagnosed by a professional mechanic to accurately identify and resolve the issue. They will have the necessary tools and expertise to determine the root cause and provide you with an effective solution.
