Can the Three-Way Catalytic Converter Be Thoroughly Cleaned?
3 Answers
The three-way catalytic converter can indeed be cleaned. Due to high sulfur content in fuel, poor fuel quality, or stop-and-go traffic congestion where fuel doesn't fully combust, excessive emissions can cause the three-way catalytic converter to accumulate a large amount of chemical complexes after some driving. There are two methods for cleaning the three-way catalytic converter: using an intravenous drip method or completely dismantling it for cleaning. The intravenous drip method requires a three-way catalytic converter cleaner, which is made from environmentally friendly solvents without chlorobenzene series, capable of powerfully removing impurities, carbon deposits, and other deposits inside the converter. Before cleaning, insert the infusion needle into the engine's rubber intake vacuum tube, set the flow controller to maximum, start the engine, and input the three-way cleaner until the engine has drawn in all the cleaning solution. Then, remove the infusion needle to complete the cleaning process.
I think cleaning the three-way catalytic converter can indeed be effective sometimes, but it depends on the specific situation. For example, if there is less carbon buildup in the engine, adding a specialized three-way catalytic cleaner into the fuel tank and driving for a while can dissolve some blockages, improving exhaust and power. I've seen many car owners achieve good results this way. The basic principle of cleaning is to use chemicals to remove accumulated pollutants and restore the converter's functionality. However, if the catalytic converter is already physically damaged—such as a cracked ceramic core or hardened sintering—cleaning it multiple times won't help, and the only solution is to spend money on a replacement. Personally, I recommend using diagnostic tools to check the blockage level before cleaning to avoid blind operations, which could waste time and money. Choose reliable brands for cleaning products to avoid damage from low-quality items. Remember, cleaning is not a long-term solution; it must be combined with regular maintenance to ensure reliable results without extra costs.
My own car once had a strong exhaust odor due to a clogged catalytic converter, so I tried using a cleaner, and the exhaust smell reduced significantly, and the power became smoother. However, cleaning doesn't always work—if the catalytic converter is severely aged or the engine has major issues, cleaning may not be enough, and replacement parts might be necessary. From personal experience, cleaning is suitable for mild carbon buildup issues and is cost-effective, often just tens of yuan to solve minor problems. But if the clog is severe, cleaning might backfire and worsen the issue, so it shouldn't be relied on entirely for repairs. Using proper fuel and maintaining the engine well can reduce carbon buildup and extend the catalytic converter's lifespan, saving money and effort. I recommend that car owners facing similar issues try a simple cleaning first to see the effect—if it doesn't work, then turn to professional inspection and repair, unlike me, who initially delayed things blindly.
