How Often Should the Three-Way Catalytic Converter Be Cleaned?

2 Answers
LaElizabeth
07/24/25 1:05pm
Car three-way catalytic converters should be cleaned every 10,000 kilometers. The cleaning method for the three-way catalytic converter is as follows: 1. Place the removed three-way catalytic converter upright in a plastic bucket, shake the three-way catalytic cleaner evenly, put it into the pot lock of the high-pressure spray gun, connect the air pipe, and spray evenly on the three-way catalytic converter grid, repeatedly rotating the three-way catalytic converter for cleaning. 2. After spraying for 6 seconds, pause for 3 minutes to allow the cleaning solution to penetrate deeply into the carbon deposits, quickly foam, and dissolve the carbon deposits into mud that flows out. 3. The slow-release agent in the cleaning solution forms a protective film on the metal surface, and spraying on the rhodium, platinum, palladium, and other precious metals at the grid base can effectively protect them.
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MacLawson
08/11/25 7:09am
From my driving experience, the catalytic converter is not a part that needs regular cleaning. It's usually sufficient to have it inspected every 40,000 to 60,000 kilometers, and there's no need to clean it every time. Only when the car emits unusual exhaust odors, experiences poor acceleration, or the emission fault light comes on, should you seriously consider cleaning it. Personally, I have the emission system checked by a mechanic every two years during routine car maintenance to prevent costly repairs due to clogging. Using high-quality gasoline and regularly replacing the air filter can also reduce carbon buildup and extend the life of the catalytic converter. Remember, the cost of cleaning is low but can save you thousands in replacement costs for the converter.
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