What is the purpose of fuel system cleaner?

[DeEthan]

Fuel system cleaner is essentially a general term for a category of cleaning agents. Using such products can significantly reduce the emission of harmful substances in vehicle exhaust, help vehicles pass exhaust emission tests, restore engine power, and improve engine efficiency and fuel economy. The related details are as follows: 1. When the engine is running, it generates extremely high temperatures. Under these high temperatures, unstable components in the fuel are prone to oxidation and condensation reactions, forming gum and carbon deposits that accumulate on the intake valves and fuel injectors. 2. On the other hand, for fuel-injected engines, each time the cylinder operates, fuel is injected before ignition. The moment the engine is turned off, ignition is immediately cut off, but the fuel injected during this cycle cannot be recovered and instead adheres to the intake valves and combustion chamber walls. Under the engine's high temperatures, the gasoline easily evaporates, but the wax and gum substances in the gasoline remain. Over time, these wax and gum substances accumulate and thicken, hardening upon repeated heating to form carbon deposits. 3. For technologically advanced turbocharged engines and direct fuel injection engines, under the common low-speed, high-temperature conditions in urban driving, combustion is not as complete, making them equally prone to carbon deposits.