What Causes the Engine to Start and Then Immediately Stall?

[LaJoanna]

Engine starts and then immediately stalls due to: 1. Short circuit or power failure in the engine or car computer; 2. Blocked fuel line; 3. Excessive carbon buildup in the throttle body leading to insufficient throttle opening; 4. Clogged fuel injectors resulting in reduced fuel delivery; 5. Low fuel pressure from the fuel pump; 6. Use of substandard fuel. The engine is the device that provides power to the car, determining its power, fuel efficiency, stability, and environmental friendliness. Its working principle is to convert the chemical energy of fuel into the mechanical energy of piston motion to output power. Engines are categorized into: 1. Diesel engines; 2. Gasoline engines; 3. Electric vehicle motors; 4. Hybrid motors.

[DiTheo]

I've seen this problem a lot in auto repair. Common causes include: first, fuel delivery issues, like a failing fuel pump not supplying enough gas or a severely clogged fuel filter; second, ignition system failures, where worn spark plugs or damp ignition coils prevent proper sparking; third, intake leaks, such as a small hole in a vacuum hose causing trouble, or a malfunctioning mass airflow sensor acting up; fourth, an oversensitive anti-theft system cutting off fuel if the key chip doesn't match; and finally, faulty sensors, like a bad crankshaft position sensor confusing the ECU. Always check fuel pressure first, then test the ignition coils. If both are fine, use a diagnostic tool to read trouble codes.

[AlexaDella]

I just encountered this situation last week where the car would start with a few sputters when cold and then stall. After checking, I found the issues could be in these areas: fuel system problems are the most common, either the fuel pump or injectors are faulty; ignition system issues, like spark plug gaps being too wide or high-tension leads leaking electricity; the idle control valve is stuck; the throttle body is as dirty as a range hood; or the battery voltage is too low to power up. Later, I discovered that there was too much debris in the fuel tank, completely clogging the fuel filter. I recommend first checking the dashboard warning lights, and you can simply inspect the fuses and fuel pump relay yourself.

[CatherineDella]

The car can start but immediately stalls, which may be due to insufficient fuel supply in the fuel system, clogged fuel injectors, or a faulty fuel pump being common causes. Leaking high-voltage wires in the ignition system can cause the spark plugs to malfunction. A vacuum leak in the intake system can lead to an overly lean air-fuel mixture. A misaligned throttle position sensor can also trigger this issue. Additionally, insufficient or overly thin engine oil, or an aging battery with unstable voltage could be culprits. If you encounter this situation, it's advisable not to force a start. First, check the oil dipstick, then inspect if the air filter is clogged, and finally, test the battery voltage.