The problem basically with the carburetor cars consists in the regulation of the chicler and the passage of air, there are two possible problems the first consists of the calibration of the tubes with the float I recommend changing the base and the punch in the same way to verify the state of the float and replace it in case the second at the base of the tar which solutions replacing that additional chicler if possible, check the gasoline pump so that the flow of the same is constant and even in 26燃油压力的psi