What causes a car to start and then stall quickly without being able to accelerate?
1 Answers
Here are the reasons why a car starts and then stalls quickly: 1. Throttle issues. For example, a clogged throttle; carbon buildup in the throttle, etc. 2. Problems with the ignition coil or spark plugs. For example, spark plugs reaching the end of their lifespan; excessive spark plug gap, etc. 3. Issues with the fuel injector, such as a clogged injector; problems in any part of the fuel system, ignition system, or intake system can lead to this phenomenon. 4. Engine carbon buildup. Carbon deposits have a strong adsorption effect on gasoline. If there is significant carbon buildup on the intake valve, throttle, or pistons, it can absorb some fuel, causing the air-fuel mixture to become too lean and affecting startup. This situation can also occur during cold starts. 5. Fuel quality. After the engine stalls when hot and sits for a while, the engine compartment temperature remains high. If the fuel is highly volatile, it can form high vapor pressure in the fuel rail. When this pressure exceeds the fuel system's supply pressure, it creates vapor lock, causing the fuel injector to spray overly lean fuel vapor, making it difficult to start.