Fuel Supply Issues:
- Clogged Fuel Filter: A dirty or obstructed fuel filter can restrict fuel flow to the engine, causing it to stall.
- Faulty Fuel Pump: A malfunctioning fuel pump may not provide enough pressure or flow to supply fuel to the engine.
- Fuel Pressure Regulator: A faulty pressure regulator can cause inconsistencies in fuel pressure, affecting engine performance.
Ignition System Problems:
- Spark Plugs: Worn or faulty spark plugs can compromise ignition and prevent the engine from running properly.
- Ignition Coil: A malfunctioning ignition coil may not provide enough voltage to the spark plugs, leading to misfires.
- Distributer Cap and Rotor: In vehicles equipped with distributors, a faulty cap or worn contacts in the rotor could disrupt proper ignition timing.
Air/Fuel Mixture:
- Air Filter: A clogged air filter can obstruct the necessary airflow intake to the engine, making it run rich or lean.
- Oxygen Sensor: A faulty or dirty oxygen sensor may provide incorrect information to the engine control unit (ECU), affecting the fuel mixture.
Electrical Issues:
- Ground Connections: Loose or corroded ground connections can disrupt proper electrical circuits and affect multiple components.
- Battery Cables: Insufficient electrical power from loose or damaged battery cables can hinder the starter and ignition systems.
Engine Control Unit (ECU):
- Malfunction ECU: In rare cases, the engine control unit may malfunction or encounter internal errors that disrupt proper engine operation.
To pinpoint the exact cause, it is recommended to run a diagnostic test using an OBD-II scanner. Codes displayed by the scanner can help identify the specific problem or faulty components. If troubleshooting and repairs are complex, it's advisable to seek assistance from a qualified mechanic or automotive technician.
