Have you ever been to the 4S store, and often asked to clean the throttle body? They keep selling you throttle-cleaning services, claiming it removes carbon, improves power, and reduces fuel consumption. Do we need to clean the throttle often? Today I will talk to you.
The throttle can be said to be the “throat” of the engine, above the air filter, below the engine block. It is reasonable to say that gasoline and motor oil do not pass through here, and should not be related to carbon. But the throttle carbon is indeed there, the main reason is that motor oil or gasoline vapor through the crankshaft ventilation box into the air intake system, there will be part of the adhesion on the throttle, and a small part is impurities in the air.
Engines with smaller air intake are more likely to allow carbon to accumulate at the throttle. In other words, throttle carbon is mainly generated at engine idle speed. Because of the high airflow and impact effect at high RPM, oil vapor is less likely to adhere to the throttle. So, reducing the idling time and driving with fewer high gears and low speeds can reduce the accumulation of carbon at the throttle.
And after the throttle carbon, the main impact is idle speed. At idle speed, the throttle itself is relatively small, carbon build-up will cause the mixer ratio to be out of balance, resulting in engine shuddering and increased fuel consumption. The throttle opening at high speed is relatively large, and the impact of carbon accumulation is very small. If the carbon buildup is too serious, it will cause the throttle back to stall, but this situation is rare. Throttle carbon can not be cleared by pulling the speed, so you can only manually clean up.
Throttle carbon buildup affects the throttle opening is not so easy. Dirty speed will not be so fast, many 4S stores in the new car 10,000 km to recommend cleaning, 10,000 km is really not a big need.
Such a maintenance project is not necessary to do, you can judge according to their own situation. If the idle speed and fuel consumption are stable, 20,000 km is no problem; if the driving environment is good with no idle shaking, 50,000 km of clean cleaning can be done. But if the frequent traffic jams, and more local sandy weather or like off-road owners, it is recommended that we clean 20,000 km once.
Such a maintenance project is not necessary to do, you can judge according to their own situation. If the idle speed and fuel consumption are stable, 20,000 km is no problem; if the driving environment is good with no idle shaking, 50,000 km of clean cleaning can be done. But if the frequent traffic jams, and more local sandy weather or like off-road owners, it is recommended that we clean 20,000 km once.
In short, throttle body cleaning is really necessary to do, but it is really not necessary to clean it frequently. Frequent throttle cleaning is just a waste of money for car owners. Incorrect cleaning methods will also damage the throttle coating.
