Dear colleague, if the cylinders are flooding with gasoline before starting the engine, it could be that the injector isn't sealing properly and is leaking. If the cylinders are flooding when starting the engine, it could be due to an ignition problem, and without a spark at the spark plugs, the engine is flooding. You should check the ignition system, spark plugs, wires, coils, etc. To ensure a good spark, you can disconnect a wire and connect a spark plug with a good ground to it to verify that the spark is strong and strong when starting the engine. If the spark is good and present in all cylinders, it could be that the coolant temperature sensor is indicating a lower temperature than the actual temperature, meaning it's reading incorrectly within the operating range. This causes the computer to inject excessive fuel, thinking the engine coolant is below freezing. Good luck, HECAN