1. Faulty Ignition Control Module (ICM): The ICM is responsible for managing the ignition timing and triggering the spark plugs to fire. If the ICM is faulty or has failed, it can prevent the coil from generating a spark, even if there is voltage present.
2. Bad Distributor Cap or Rotor: The distributor cap and rotor work together to distribute the electrical signal from the ignition coil to the spark plugs. If either the distributor cap or rotor is cracked, damaged, or has excessive wear, it can disrupt the spark and cause the engine to crank but not start.
3. Faulty Spark Plug Wires: The spark plug wires carry the electrical current from the distributor cap to the spark plugs. If the spark plug wires are damaged, loose, or have excessive resistance, they can prevent the spark from reaching the plugs, resulting in no spark.
4. Failed Spark Plugs: If the spark plugs themselves are worn out, fouled, or have excessive gaps, they can fail to produce a spark, even with voltage present at the coil. Check the spark plugs for proper condition, gap, and ensure they are clean and not worn out.
5. Fuel Supply Issues: If the engine is not receiving fuel properly, it won't be able to start, regardless of the spark. Check the fuel lines, fuel filter, and fuel pump to make sure fuel is reaching the engine.
6. Clogged or Dirty Air Filter: A clogged air filter can restrict airflow to the engine, affecting its ability to start and run properly. Ensure the air filter is clean and free from obstructions.
If you have checked all of these components and still haven't identified the issue, it's best to consult with a trusted mechanic or auto repair professional. They can use specialized diagnostic tools to pinpoint the exact cause and recommend appropriate repairs.
