- Clogged fuel filter
- Dirty or faulty fuel injector
- Faulty fuel pump
Electrical:
- Loose or corroded battery terminals
- Faulty ignition coil
- Faulty spark plug wires
- Faulty spark plugs
Mechanical:
- Low engine compression
- Worn piston rings
- Faulty valves
- Clogged air filter
- Vacuum leak
Other:
- Overheating
- Low coolant level
- Faulty thermostat
- Faulty radiator fan