What is the method for cleaning throttle valve carbon deposits?

[JacksonRose]

Cleaning throttle valve carbon deposits can be done in two ways: 1. Non-disassembly cleaning: Spray throttle valve cleaner on a cloth and wipe the throttle valve. This method does not require disassembling the entire throttle valve assembly and is suitable for throttle valves that are not heavily soiled. 2. Disassembly cleaning: The entire throttle valve assembly needs to be removed, thoroughly cleaned with a specialized cleaner, and then reassembled. This method is more complicated as it involves disassembling components, but it provides a thorough cleaning effect. If the throttle valve is not cleaned regularly, dirt can cause it to operate less flexibly and allow impurities to enter the engine along with the air, which can affect the engine's normal operation. In severe cases, it may lead to reduced power, increased fuel consumption, and unstable idling.

[MacLawson]

I've been cleaning throttle valve carbon deposits myself for several years and find it quite easy to handle. The general method is: first disconnect the negative terminal of the car battery to avoid accidents; then remove the air filter box to locate the throttle valve position; spray specialized throttle valve cleaner on the inside and around the valve plate, applying multiple times to soften the carbon deposits; gently wipe off the deposits with a soft cloth or old toothbrush - never use metal tools as they may scratch the surface; after cleaning, wait for it to dry before reassembling all components; it's best to finally reset the ECU with a diagnostic tool, otherwise the car might experience unstable idling. Excessive carbon buildup can cause sluggish acceleration and skyrocketing fuel consumption, so it should be checked every 20,000 km. As a reminder, using high-quality fuel helps prevent buildup, making maintenance much easier. DIY cleaning can save hundreds in labor costs, but remember to wear gloves throughout and ensure proper ventilation - the cleaner has a very pungent odor.

[MacBrandon]

I recommend taking your car to a professional repair shop for throttle body carbon cleaning. Although it costs a bit more, it gives you peace of mind. Technicians typically first connect a diagnostic tool to check the carbon buildup level and determine if deep cleaning is necessary. Then, they carefully disassemble related components using tools, spray strong cleaning agents to soften stubborn deposits, and use an air gun to blow away residue. If needed, they perform a thorough wipe-down. Finally, they reinstall and reset everything, ensuring the throttle valve opening returns to normal through computer calibration. If not cleaned promptly, the car may experience shaky starts, sluggish acceleration, or even more expensive engine issues. I always choose authorized 4S shops because they use OEM cleaning agents and follow standardized procedures to avoid damaging sensors. Regularly driving at highway speeds with higher RPMs can also reduce carbon buildup frequency, saving you from frequent maintenance hassles.

[StJeffrey]

The first time I cleaned the throttle body carbon buildup, I messed up by spraying too much cleaner without wiping it off in time, causing the valve to stick and the car wouldn't start. The correct approach is to turn off the power, lightly spray cleaner on the carbon deposits, wait a few minutes for the chemicals to dissolve the grime, then carefully wipe away the softened black residue with a cotton cloth or soft brush—avoid scraping hard. Make sure everything is dry before reassembling. Excessive carbon buildup can cause engine shaking and higher fuel consumption. Beginners like me should practice a few times and refer to online tutorials for guidance. For prevention, regularly replacing the air filter is crucial as it blocks dust from entering the system and reduces issues.