- Faulty Ignition Switch: The ignition switch may be defective, preventing the engine from receiving power.
- Fuel Pressure: Check the fuel pressure to make sure it is within the recommended range specified for your vehicle. Low fuel pressure can cause the engine to start but not run properly.
- Camshaft or Crankshaft Position Sensor: A faulty camshaft or crankshaft position sensor can prevent the engine from starting by disrupting the timing of fuel injection and ignition.
- Throttle Body: Check the throttle body for any blockages or dirt that may be preventing it from opening and allowing air into the engine.
- Fuel Filter: A clogged fuel filter can restrict the flow of fuel to the engine, causing it to start but not run properly.
- Vacuum Leak: Check for any vacuum leaks that could be causing the engine to run lean and preventing it from starting properly.
- Security System: Some vehicles have a security system that may prevent the engine from starting if it is not properly disengaged.
