*Fuel System Issues*
- Clogged fuel filter
- Faulty fuel pump
- Faulty fuel pressure regulator
- Faulty fuel injectors
*Ignition System Issues*
- Faulty ignition switch
- Faulty distributor cap and rotor
- Faulty spark plugs and wires
- Faulty ignition coil
*Engine Mechanical Issues*
- Timing belt or chain misaligned or broken
- Seized engine
- Low oil pressure
- Broken piston ring
*Electrical System Issues*
- Faulty battery or battery connections
- Faulty alternator
- Faulty starter solenoid
- Faulty wiring or connections
*Computer System Issues*
- Faulty engine control unit (ECU)
- Faulty body control module (BCM)
- Faulty fuel injection control module (FICM)
- Faulty ignition control module (ICM)
Troubleshooting Tips
1. Check the fuel system by testing fuel pressure. If fuel pressure is too low, the fuel pump, fuel pressure regulator, or fuel filter may be faulty.
2. Check the ignition system by checking for spark at the spark plugs. If there is no spark, the ignition switch, distributor cap and rotor, spark plugs and wires, or ignition coil may be faulty.
3. Check the engine mechanical system by checking oil pressure and listening for any unusual noises. If oil pressure is low, the oil pump or engine bearings may be faulty. If there are any unusual noises, the timing belt or chain may be misaligned or broken, or the engine may be seized.
4. Check the electrical system by checking the battery voltage, alternator output, and starter solenoid. If battery voltage is too low, the battery or battery connections may be faulty. If alternator output is too low, the alternator may be faulty. If the starter solenoid is not working, the ignition switch, wiring, or starter solenoid may be faulty.
5. Check the computer system by scanning the vehicle for any trouble codes. If there are any trouble codes, the ECU, BCM, FICM, or ICM may be faulty.
