Does a car that hasn't had carbon deposits cleaned for over 100,000 kilometers need cleaning?

2 Answers
KingstonFitz
08/31/25 5:56am
A car that hasn't had carbon deposits cleaned for over 100,000 kilometers does need carbon deposit cleaning. The introduction and methods for carbon deposit cleaning are as follows: Introduction to Carbon Deposit Cleaning: It should be decided based on the vehicle's usage. Generally, it is recommended to perform the cleaning every 50,000 kilometers. However, from an economic perspective, if the car is frequently used for long-distance travel, cleaning may not be necessary, and even cleaning once every 100,000 kilometers is acceptable. If the car is often driven in urban areas, it is recommended to clean every 50,000 kilometers. Methods for Cleaning Carbon Deposits: 1. Hydrogen-oxygen decarbonization machine uses atomization to clean both the air intake and the gasoline engine cylinders simultaneously. 2. Drip cleaning or soaking: After removing the spark plugs from each cylinder, pour the cleaning solution into the cylinders and soak until most of the carbon deposits have melted, then extract them using professional tools. 3. Fuel additives are relatively economical and effective, though they cannot completely remove all carbon deposits and may contain corrosive chemicals. 4. If the car has severe carbon deposits, it is recommended to manually disassemble and clean the engine's intake and cylinder head.
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BethanyLee
09/13/25 2:22am
After working on cars for so many years, I've seen plenty of vehicles that haven't had carbon deposits cleaned for over 100,000 kilometers - it's absolutely time for a cleaning. Carbon buildup is the accumulation of oil residue and impurities inside the engine, which can form a thick crust-like layer at high mileage, leading to rapidly increasing fuel consumption, reduced power, and noticeably sluggish acceleration during speed increases. Common symptoms also include unstable idling and blackened exhaust pipes. The cleaning methods aren't complicated: you can use fuel additives for a simple system cleaning through the fuel tank, or disassemble components for manual removal. If left untreated, prolonged buildup may damage fuel injectors or pistons, potentially costing thousands in major repairs later. I recommend addressing it early - spending a few hundred on minor cleaning now is much better than paying thousands for repairs later. Regular maintenance is crucial; checking carbon deposit conditions during each oil change significantly benefits the vehicle's lifespan.
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