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If the engine is flooded, the correct way to start it is to hold the gas pedal to the floor while cranking. Vehicle powertrain controllers are programmed to shut fuel injectors OFF if the pedal is held to the floor while cranking. This allows any unburned liquid fuel to work it's way out of the engine.
If this does not allow the engine to start, you may need to remove the spark plugs and blow them dry with compressed air.
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