Because the car use environment is very complex, the engine used for a period of time, into the engine room of dust and impurities will form carbon and resin and other harmful substances in the engine surface, if long time don't clean up, these harmful substances will be converted into sludge, penetration in the surface of the engine will not only cause metal parts rusting, plastic parts deformation aging, but also lead to increased engine power reduction and increase of fuel consumption, and even generate various oxidation damage to the engine, these fault you can use OBD Diagnostic Tool to check it out, so regular cleaning of engine is very necessary.
You can ask professionals to clean the engine, you can do it yourself by following the procedure to clean the engine. First, the automotive electronics with plastic film masked, then use a wet towel to cover the film above, to prevent high-pressure water rushed into the engine, cause the car difficult to start. By the side of the engine from top to bottom will be attached to the class dirt engine compartment side and engine appearance rinse with water cannons; next, engine external cleaning agent evenly sprayed on the engine and engine compartment periphery. If necessary, you can use the Launch X431 GDS or Launch X431 Diagun III tool.
After about three minutes, with a fiber brush to clean all parts reach of the engine compartment, and rinse with water cannons quickly brushed off the dirt. Then the engine external cleaning agent sprayed on engine surface. Repeated 2-3 times, until the appearance of the engine clean.
In addition, the appropriate selection of some of the gasoline additive products can also reduce the engine oil contamination and carbon deposit, you can periodically use Autel MaxiSys Pro MS908P or Autel Maxidiag Elite MD702 tool to check the car's performance.