First: raise gasoline gasoline quality wax and gum and other impurities are the main component of the formation of coke, so cleanliness is high gasoline tendency to form carbon deposits on weaker. Unfortunately, the current quality of gasoline is still relatively low compared with developed countries, can only be crude. Grade does not mean we have to pay attention to quality, that number is 97 less than the oil does not necessarily impurities 93, the octane labels represent oil, and do not represent the quality and cleanliness. Some owners in order to ensure the cleanliness of gasoline will be used in practice to add gasoline gasoline detergent. This effectively prevents the formation of metal surface area carbon junction layer, and can be gradually activated gradually to remove existing soot particles, thus protecting the engine from damage. But adding gasoline detergent must be careful, if you join the counterfeit products will have the opposite effect. Second: Do not for a long time idling with long idling time, the engine reaches normal temperature time becomes longer, the gasoline is injected into the back of the valve after the slow rate of evaporation, carbon also arises. At the same time often idling speed, air flow into the engine also small, so that becomes too weak, it will promote the deposition of coke scouring effect of carbon. Third: run a high speed to maximize the speed multi-shift my hand car ran purpose is to take advantage of high-speed stream of flushing of the inlet to prevent carbon deposition. In addition, to improve the speed of the shift also run a high speed with the same purpose, the original 2000 speed when shifting into 2500 conversion, not only can effectively prevent coke formation, can also increase the power of the car, but also to avoid the change burst speed is too low to bring vibration block, protect the engine. Fourth: the use of fuel additives clean clean clean protective agent to clean the engine is quite simple, the use of specific methods and precautions to see the product instructions for use. Cleaning agent in the engine work, the fuel pump along with the fuel suction together into the feed line. With the fuel flow, it can not only be washed in the tank, gum and gum and coke fuel pump nozzle on the filter, it can also when the engine is working properly, the automatic valve and the engine cylinder cleansed coke, the engine "youth", regained surging power. Because clean down from the fuel tank, fuel pump and fuel filter pipe gum will be deposited in the fuel filter, so the split-free cleaning, must be replaced the fuel filter (petrol grid). Here, car care expert exchange with the owner through to remind you once again that, due to the chemical cleaning agent to clean the rubber composition of the oil pipeline has some corrosion, when using this method, be sure the cycle interval, otherwise it will speed up the fuel supply line of rubber aging and corrosion. Fifth: disassemble simple cleaning effort, only correct way to use can be. But for coke serious engine, this approach becomes powerless, unable to achieve complete cleaning cleansing purposes. "Vehicle cleaning" after the performance if the engine is still bad, and the technician tells you the cylinder valve and the problem is caused when too much carbon, it would have to disassemble the engine using the method to solve. Valve coke cleaning is simple, and after removing the intake manifold, by hand or using drugs soak cleaner to clear. As for cleaning the engine cylinder coke, you must "go to war", remove the cylinder head, timing belts, etc. can be cleaned. After reassembling the engine disassembly, its power, sealing performance will be inferior to the original, so under normal circumstances, clean carbon deposits inside the cylinder of the engine should not be frequent. As a last resort, we must go to a regular maintenance plant, otherwise the engine performance will be compromised. Genuine auto parts, all in exchange with through the mall. Contact: Mr. Lin Tel: 18128838102 QQ: 2848797137 micro letter: autoepp official website: http: //www.autoepp.com