Three catalytic converter maintenance cycle should not be too long, generally go to 4S shop or regular repair shop for cleaning and maintenance, usually more attention to the car can maintain the performance of the car and reduce the harmful substances in the exhaust.

Usually pay more attention to the following points:

1. The car with three catalytic converter can not use leaded gasoline, because after the combustion of leaded oil, the lead particles with the exhaust gas through the three catalytic converter, will be covered on the catalyst surface, so that the catalyst action area is reduced, thus greatly reducing the conversion efficiency of the catalyst, resulting in three catalytic converter lead poisoning.

2. The unburned mixture should be avoided into the catalyst.The temperature of the three catalytic converter is about 200 degrees Celsius, the best working temperature is 400 degrees Celsius to 800 degrees Celsius, and after more than 1000 degrees Celsius as the catalyst of precious metal composition itself will also produce chemical changes, so that the effective catalyst component in the catalyst is reduced, and the catalytic effect is weakened. Therefore, in the use of vehicles, we should pay attention to the following situations: one is too long idle idle; two is the ignition time is too late; three is individual cylinder misfire does not work; four is the difficulty of starting; five is the mixture is too thick; six is the engine burning oil, seven is the oxygen sensor failure; eight is the high water temperature caused by poor cooling.

3. When driving on uneven roads, special attention should be paid not to "underpin", because most of the internal catalyst catalyst carrier is formed by honeycomb pottery, which is easy to break after collision, making the catalyst ineffective and the exhaust pipe blocked.

4. If there are abnormal working conditions, such as tempering or repetitive stall, stop in time for inspection, because these conditions can lead to permanent damage to the catalytic converter.

5. Do not cut off the ignition switch of the driving vehicle.

6. Do a good job in the inspection of the three-way catalyst during vehicle maintenance. The inspection content is: whether the exhaust pipe is abnormal, which is usually caused by loose exhaust pipe joint, damaged three-way catalyst, loose catalyst replacement plug and other reasons; whether the exhaust pipe is cracked or the shell is pressed flat, and other appearance damage; whether the exhaust tail pipe is discharged with catalyst particles. If the shell of the three-way catalyst is damaged or the exhaust tail pipe is discharged with particles, they need to be replaced.