What Are the Reasons Why a Car Battery Jump Start Still Fails to Start the Engine?
1 Answers
The reasons why a car battery jump start still fails to start the engine are: 1. The vehicle has been parked for a long time without use, causing the battery to discharge naturally and resulting in insufficient power to start the engine; 2. The jumper cables used for rescue are too thin, leading to insufficient current, improper operation during jump-starting such as loose or improper connections, or the rescue vehicle not being started, causing insufficient voltage and current; 3. The battery of the vehicle needing a jump start has been depleted multiple times and cannot store power anymore, indicating severe damage; 4. The vehicle needing a jump start or the rescue vehicle was not kept in the turned-off state; 5. Check the sequence of connecting the jumper cables: first connect the positive terminal of the dead battery to the positive terminal of the rescue vehicle, then connect the negative terminal of the dead battery to the negative terminal of the rescue vehicle.