How to clean the three-way catalytic converter after it is blocked:
1. Add cleaning agent to the fuel tank
The biggest advantage of this method is that it is cheap and easy to operate. You only need to add this type of cleaning agent directly into the fuel tank. However, the cleaning effect of this product on the three-way catalytic converter is really minimal; because this product reaches the three-way catalytic converter after being burned in the combustion chamber. The container has been completely burned, and there is almost no cleaning effect.
2. Hanging bottle cleaning
Hang bottle cleaning is also called disassembly-free cleaning. The biggest advantage of this method of cleaning three-way catalytic converters is that there is no need to disassemble the three-way catalytic converter. The disadvantage is that it is expensive to purchase cleaning equipment and the cleaning effect is not good.
This kind of hanging bottle cleaning uses inlet vacuum suction to suck the cleaning agent into the combustion chamber for combustion, and then establishes a high-temperature oxidation environment inside the three-way catalytic converter.
Then through the redox reaction, the sulfur and phosphorus chemicals on the three-way catalytic converter and the uncombusted products of gasoline are converted into carbon dioxide, sulfur dioxide and other gases and discharged out of the exhaust pipe, thereby restoring the three-way system. The active purpose of rare metals on the catalytic converter.
3. Disassembly and cleaning
Disassembly and cleaning is a very laborious method. It requires completely disassembling the three-way catalytic converter from the vehicle, and then using cleaning agent (oxalic acid) , toilet cleaner) soak for a period of time, then rinse with clean water. This method is the most effective way to clean the three-way catalytic converter.
Extended information
The three-way catalytic converter blockage can be divided into three stages:
The first stage is a slight blockage stage, which only shows that the exhaust gas purification function is reduced, and the exhaust gas Emissions exceed standards.
The second stage is the moderate blocking stage
Chemical complexes have accumulated to a certain extent on the catalyst surface. At this stage, the exhaust back pressure increases. Fuel consumption increases and power decreases.
The third stage is the severe blockage stage
This stage is characterized by severe loss of power and frequent flameout. In severe cases, the exhaust pipe will burn red. It can even cause the vehicle to spontaneously ignite.
Reference material Baidu Encyclopedia-Three-way catalytic converter
Reference material China News Service-Car owners revealed that the three-way catalytic converter frequently fails and seriously damages the engine