Does zhongxingwei tiger skin card smell when it burns?

Hello: Regarding the tail gas problem you mentioned, the main reasons should be that the nitrogen oxides, carbon monoxide and hydrocarbon values exceed the standard. It is suggested to check that the resistance of high-voltage line should not be too large; Check the spark plug again to see if the gap is too large; Then remove the nozzle and check the atomization state and sealing condition; Check whether the three-way catalyst and oxygen sensor are faulty; It is also necessary to thoroughly clean up the carbon deposits in the intake system and the engine; In addition, delaying the ignition timing will also reduce the emission of nitrogen oxides. Due to the delay of ignition time, the combustion time in the combustion chamber will be shortened, the maximum combustion temperature will be reduced, and the emitted hydrocarbons and nitrogen oxides will also be reduced. Excessive carbon monoxide is mainly caused by the high concentration of mixed gas. Your car should be EFI. I suggest you check the throttle opening, check the idle motor, and check whether the engine has serious carbon deposition. It is recommended to clean it. Secondly, check whether the needle valve of the injector is not closed tightly or opened too wide, check whether the values of each sensor are normal, check whether the timing is correct, check whether the ignition system and spark plug need to be replaced, and check whether there is any ignition problem. The water sprayed from the exhaust pipe is formed because the water vapor in the exhaust pipe freezes when it is cold. When the ambient temperature is low, water vapor will condense into water droplets on the exhaust pipe wall and flow out with the exhaust gas. I hope my answer is helpful to you.