What is the cleaning method for the three-way catalytic converter?

[StDeclan]

The cleaning methods for the three-way catalytic converter are: 1. Add cleaning agent to the fuel tank; 2. Perform hanging bottle cleaning, where the cleaning agent is drawn into the combustion chamber through the intake vacuum suction and burned, achieving the purpose of restoring the activity of the three-way catalytic converter through redox reactions inside it; 3. Disassemble and clean, remove the three-way catalytic converter, soak it in oxalic acid and toilet cleaner, then rinse with clean water. The three-way catalytic converter is an important external purification device installed in the automobile exhaust system. Its working principle is: when high-temperature automobile exhaust passes through the purification device, the purifying agent in the three-way catalytic converter will enhance the activity of CO, HC, and NOx gases, promoting certain redox chemical reactions.

[VanJack]

I've dealt with many clogged catalytic converter issues before, and cleaning them isn't actually difficult. You can try buying a bottle of specialized cleaner and adding it to the fuel tank, then drive for a few dozen kilometers to let the engine run and burn it clean. I recommend choosing a reputable brand—don't cheap out on low-quality products. If the carbon buildup is too severe, you'll have to remove it for cleaning, using a high-pressure gun or chemical soaking, but this should be done by a professional shop—don't attempt it yourself as you might damage the oxygen sensor. Prevention is simple: avoid short trips, don't let the car idle for too long, use high-quality gasoline, and regularly check exhaust emissions to catch carbon buildup early. A clogged catalytic converter will hurt fuel efficiency and power, so addressing it early can save you from costly repairs. These methods are what I commonly use on customer vehicles—they're effective and safe.

[LeAlana]

I have an old car myself, and cleaning the catalytic converter is as simple as using a fuel additive—just pour it into the fuel tank and take a drive, which is quite convenient and cost-effective. For instance, last time when there was carbon buildup and the power dropped noticeably, adding the cleaner and driving on the highway showed immediate results. I always keep a bottle in the car and use it every six months as a preventive measure to avoid clogging and affecting exhaust emissions. If you're worried about handling it yourself, getting a professional dismantling and cleaning at a repair shop isn't expensive either—they use high-pressure washing tools—but I don't recommend beginners disassembling it carelessly as it can lead to issues. A clogged catalytic converter not only wastes fuel but may also trigger the check engine light, so paying attention to the engine's operating condition during regular maintenance is crucial. Simple minor maintenance can extend the car's lifespan.

[McAbigail]

The most economical way to clean the three-way catalytic converter is by adding a dedicated fuel system cleaner. You purchase that liquid additive which you pour into the fuel tank, then start the engine and drive normally to dissolve carbon deposits. I've tried it several times with good results, costing less than 100 yuan. If the catalytic converter is severely clogged, you may need to remove it for cleaning, but this is expensive and time-consuming - it's best left to professionals to avoid damaging components. Routine maintenance includes avoiding frequent short-distance driving and regular oil changes, which can reduce clogging risks. These small measures can save big money - no need to wait until problems arise before fixing them.

[StAlan]

After years of driving, I believe the key to catalytic converter maintenance lies in prevention rather than post-failure repairs. I often remind novice car owners to use fuel additives for cleaning once every season – simply adding it to the fuel tank while driving can remove internal carbon deposits, a method that's both safe and straightforward. A clogged converter leads to excessive emissions and sluggish acceleration, so address any issues promptly. When necessary, have it professionally removed and cleaned at a repair shop, where they use chemical solvents and high-pressure rinsing for optimal results. Avoid frequent short trips in urban traffic congestion, and using quality fuel helps protect components, reducing cleaning frequency and saving money. Small maintenance makes a big difference – don't neglect it.