Why does the car stall immediately after starting?
1 Answers
There are many reasons why a car stalls shortly after starting, such as battery issues, inaccurate air-fuel mixture ratio, unstable ignition system supply voltage, fuel injector leakage, engine carbon buildup, and poor fuel quality. Below is a detailed analysis of the specific causes that may lead to difficulty in starting the car: 1. Battery issues: If this is the cause, the owner can check by pressing the horn. If the horn sounds noticeably weaker than usual or doesn't sound at all, it can be concluded that the battery is low on charge. 2. Inaccurate air-fuel mixture ratio: This can occur in both open-loop and closed-loop control systems. If the car's computer makes an error in judgment, it may cause inaccuracies in controlling the air-fuel mixture and ignition timing through the actuators, thereby reducing the car's power output and causing shaking, which can also make the car difficult to start. 3. Unstable ignition system supply voltage: This can be caused by dirty fuel injectors or a faulty carbon canister purge valve. 4. Fuel injector leakage: While fuel injectors are supposed to spray fuel normally, leakage constitutes an additional fuel supply. The more severe the fuel injector leakage, the richer the air-fuel mixture becomes, making it difficult to start the car when it's hot.
