How to Clean the Three-Way Catalytic Converter Properly?
2 Answers
Methods for cleaning the three-way catalytic converter are as follows: 1. Adding cleaner to the fuel tank: This method is very common in the market, with the biggest advantages being low cost and simple operation. You only need to add this type of cleaner directly into the fuel tank. However, the cleaning effect of such products on the three-way catalytic converter is minimal. 2. Drip cleaning (also known as no-disassembly cleaning): This is currently the most popular method for cleaning the three-way catalytic converter in the market. The biggest advantage is that it does not require disassembling the three-way catalytic converter, but the downside is the high cost of purchasing the cleaning equipment, and the cleaning effect is not ideal. This drip cleaning method uses the intake vacuum suction to draw the cleaner into the combustion chamber. After combustion, it creates a high-temperature oxidation environment inside the three-way catalytic converter, converting sulfur, phosphorus compounds, and unburned residues from gasoline into gases like carbon dioxide and sulfur dioxide, which are then expelled through the exhaust pipe. This process aims to restore the activity of the precious metals on the three-way catalytic converter. 3. Disassembly cleaning: Disassembly cleaning is a very time-consuming and labor-intensive method. It requires completely removing the three-way catalytic converter from the vehicle, soaking it in a cleaning agent (such as oxalic acid or toilet cleaner) for a period of time, and then rinsing it with clean water. This method is the most effective for cleaning the three-way catalytic converter.
I believe the best way to clean the three-way catalytic converter starts with regular maintenance. I often use professional cleaning agents for this purpose, and the specific operation is very simple: buy a bottle of high-quality three-way catalytic converter-specific cleaner, add it to the fuel tank, then drive on a highway or expressway for about 30 minutes to let the engine run at high speed. This allows the cleaner to fully dissolve carbon deposits and impurities, and after completion, the exhaust system will be much smoother. Be careful not to poke around randomly or rinse with water, as this can easily damage the internal structure of the catalytic converter. If you notice a drop in car power or abnormal exhaust smell, it may be a signal to clean it. Doing this regularly can prevent blockages, extend the component's lifespan, and save money while being environmentally friendly. I learned this from an experienced driver friend, and over a decade of experience has proven its effectiveness. After each cleaning, I feel the throttle response is quicker, and fuel consumption stabilizes. The key is to choose the right product—consult with an auto repair shop for recommendations to avoid buying counterfeit goods.
