Haval h2 changed the spark plug to clean the throttle, but it's still boring!

Your good friend, according to what you said, I suggest you check whether the gasoline is blocked after one liter. Also check whether the gasoline pressure is too low! In addition, I suggest you clean the fuel injector. Blocked fuel nozzles can also lead to the situation you mentioned. BBA Mercedes-Benz BMW Audi car wishes you a happy life! Health and safety! The financial resources are rolling! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.