2. Defective battery: Ensure that the new battery is fully charged and has the correct specifications for your vehicle.
3. Starter issues: If the battery is connected correctly and the connections are clean, the problem could be a faulty starter motor, solenoid, or ignition switch.
4. Fuel delivery problems: Check fuel lines, fuel pump, and fuel filter for any blockages or leaks.
5. Engine mechanical problems: If there is a mechanical issue, such as a seized engine, the car won't start regardless of the battery.
