In real life, many drivers have encountered problems of one kind or another, such as unstable engine speed, poor acceleration, high fuel consumption, black smoke, unsuccessful start, etc. and these problems do not appear. It happened in old cars, and some mileage was less than 100,000 kilometers or even shorter. In this regard, in addition to accidental mechanical and electrical reasons, most of the engine is due to excessive carbon deposition and internal environment, which affects the normal operation of the engine.
What we want to emphasize and introduce here is: the project that does not pay attention to everyone, many manufacturers have no special equipment - the cleaning and maintenance of the engine intake system. For the EFI car, the dirt of the throttle body and the idle valve will affect the sensitivity of the TPS and IAC, which will greatly affect the working conditions of the engine.
Slightly more specific: air quality, air filter maintenance quality and crankcase ventilation and other factors, often cause fouling at the throttle body, idle valve, and thus affect the throttle opening sensitivity, opening accuracy, idle valve Air flow, idle motor flexibility, and ultimately affect the normal operation of the engine, the symptoms are: idle speed, wheezing, poor acceleration, increased fuel consumption.
At present, some auto repair factories have also paid attention to and increased the cleaning system of the intake system, but most of them are limited to disassembly and cleaning, and we advocate the use of tools to remove the cleaning, the effect is equally obvious, which saves time and effort, and more It is important not to damage the original structure as much as possible. In addition, you need to remind everyone: the cleaning solution used for cleaning can be very knowledgeable - those ordinary carburetor cleaning agents, inferior products are easy to damage the sensor (such as oxygen sensor), use caution.