How to clean three-way catalytic converter

Cleaning the three-way catalytic converter: Using oxalic acid solution and soaking the three-way catalytic converter for several hours can effectively clean it up, and the effect is very good.

Different from other sulfuric acid and hydrochloric acid cleaning, even if oxalic acid residue is not cleaned, it is the same when the vehicle starts: when the temperature reaches 189.5℃, oxalic acid will decompose into carbon dioxide, carbon monoxide and water when it meets concentrated sulfuric acid. Therefore, oxalic acid will not remain permanently and will not cause harm to ternary.

Judging whether Sanyuan needs cleaning:

1. If the exhaust pipe is stuffy and the exhaust is not smooth, it is probably because the three-way catalyst is blocked.

2. After cleaning the throttle and injector, the vehicle still lacks power and the fuel consumption increases, which may also be caused by the three-way catalytic converter.

3. When the cold car is started, it often smells very smelly, mixed with the smell of gasoline, which is mostly because the three-way catalyst has failed.

Extended data:

Maintenance of three-way catalytic converter;

1, don't use inferior gasoline. When gasoline contains more lead or other impurities, some impurities will remain after combustion, and some of them will be discharged into the three-way catalyst along the exhaust pipe. In the long run, the three-way catalyst will be blocked. And this is the main reason of ternary blockage.

2, try to ensure the normal operation of the engine, make the air-fuel ratio in the best state. If the fuel is not fully burned, it will inevitably form carbon deposit, which not only increases the working intensity of ternary, but also easily forms carbon deposit on ternary, leading to its blockage.

3. After cleaning the throttle and nozzle, it is recommended to clean Sanyuan again. This is because the carbon removed when cleaning the throttle and fuel nozzle enters the three-way catalytic converter with the exhaust pipe. When carbon deposition is serious, it will block the ternary.

References:

Baidu encyclopedia-ternary catalytic converter