Is it necessary to clean carbon deposits at a 4S shop?

[MaddoxRose]

4S shop cleaning carbon deposits is necessary. The following is a detailed introduction about automobile 4S shops: 1. Overview: The full name of a 4S shop is Automobile Sales Service 4S shop (Automobile-Sales-Servicshop-4S), which is a car sales enterprise integrating four functions: vehicle sales (Sale), spare parts (Sparepart), after-sales service (Service), and information feedback (Survey). 2. Features: Automobile 4S franchise stores are invested and constructed by dealers and built according to the standards specified by automobile manufacturers. 4S shops and automobile manufacturers jointly form an automobile brand alliance, representing the brand culture, reflecting brand value, maintaining brand loyalty, and establishing the brand awareness and reputation of the automobile manufacturer.

[JeremiahLee]

I personally think it's quite necessary to have carbon deposits cleaned at a 4S shop, especially for cars that have been driven for over three years. My Honda, which has been running for five years, noticeably had slower throttle response and significantly higher fuel consumption. Later, I had the carbon deposits inside the cylinders cleaned at the 4S shop, where the technician used professional equipment to thoroughly clean the combustion chamber and throttle body. The effect was immediate—the power was restored to about 80% of the car's original level, and driving with the AC on or climbing hills became effortless again. They also checked related components like spark plugs and fuel injectors, offering a very comprehensive service. Although it costs around a thousand yuan, considering it can extend the engine's lifespan and avoid the expense of major repairs, the money is well spent. I usually use fuel additives, but for deep cleaning, professional equipment is still the way to go.

[Kevin]

During my last maintenance visit, the 4S dealership recommended a carbon deposit cleaning. I observed the technician's standardized operation - they first removed the intake manifold and used an endoscope to inspect carbon buildup thickness in the cylinders. I could clearly see the blackened piston tops. They then employed walnut shell blasting equipment for physical removal, which is far more reliable than those roadside shops that simply pour in cleaning fluids. The entire process took three hours, including replacement of minor components like sealing rings. Actually, vehicles frequently driven at low speeds in urban areas are particularly prone to carbon buildup. My car only had 40,000 km, but after cleaning, the idle vibration disappeared completely. Importantly, the 4S shop records complete maintenance records, which can enhance used car valuation during resale. I believe this service is necessary every 2-3 years, just like regular health check-ups.

[MacLeo]

Carbon buildup is indeed worth paying attention to, especially in direct injection engine models. Based on my experience, it's advisable to consider cleaning around the 50,000-kilometer mark. The ultrasonic cleaning equipment at 4S shops can thoroughly clean each intake pipe, while adding additives yourself can only provide temporary relief. During my last cleaning, the technician discovered slight clogging in my fuel injectors and addressed it simultaneously. The cost is indeed 30% higher than small shops, but it saved me thousands in potential future repairs for the high-pressure fuel pump. Owners who prioritize performance should schedule regular cleanings – my friend's Golf GTI regained 15 horsepower after cleaning. Long-term neglect may trigger warning lights or even cause cylinder scoring. With current fuel prices so high, the improved fuel efficiency from carbon cleaning pays for itself within six months.