1 intake air intake is too dirty. General environment in Beijing, a large hollow sand filter plays the role of the lung. If the air filter filter is saturated, then the engine will work directly from the inhalation of dust into the combustion chamber inside the throttle, the impact of all gas distribution device, less the engine intake air, gas mixture is too thick, there will be accelerated the phenomenon of weakness, and increased fuel consumption. Approach: make sure to maintain air filter with high pressure (pump) clean-up, while cleaning the throttle valve and the idle get a bucket of carburetor cleaner. (2) the total fuel system in a gas station, not every time the quality and quantity. Because the oil is divided into stations match points times, this may increase the oil well, but perhaps next time the oil is to increase the residual oil tank bottom. Storage tanks are not cleaned, there will be a lot of impurities in the oil left, which if DX catch, then imagine what is your gas tank up! Recommend to the large number of petrol stations, they are unified into the oil channel is also better. After feeling each end of the increase oil change if the engine is running, such as speed, noise, fuel oil, etc. to assess the quality of this box. Impurities in gasoline is a major element in making coke. Fuel combustion in the combustion chamber the remaining ingredients are mostly gelatinous, at high temperature, the resin with a combination of inhalation of the dust chamber, the truth is almost like a porcelain firing, resulting in the formation of coke on the way. Coke attached to the piston top and valves and combustion chamber wall is very solid, coke will make space for smaller combustion chamber, intake and exhaust valves closed so lax, the first fuel injection plug, spark plug points and other direct fire is not strong affect engine performance. Approach: do the split-free cleaning, including cleaning spray head, mainly for internal combustion chamber and piston at the top of the coke, but also clean the intake and exhaust valves. Best to go to service stations, is clean but for the same concentration of different cleaning agents, cleaning after the effect is different, supporting the work after cleaning should also have added such as: change gas filter, cleaned the fuel pressure regulator. After washing in the conditions of the road pulling speed, keep longer,http://www.lovebagstore.net, this would exclude the remaining coke combustion chamber. Split cylinder head clear coke, can not guarantee the closeness of the engine factory, due to manual dismantling, installation prone to many ills. At the same time within 100,000 kilometers the car without burning oil, add the premise do not agree to any anti-wear additives. (Anti-wear additives are played the role of repair, will be added to the engine prematurely cause some side effects). Moving from 1.5 to 20,000 km dissecting some fuel cleaner, clean the fuel system and tank of carbon deposition is of some help. 3 ignition system ignition coil, distributor,http://www.lovebagstore.net, power lines and spark plug is critical. If any link is not good to detect some problems, its poor working inside the engine will rapidly increase the coke, the ignition system problems, the car will normally cold start problems arise, moving weakness,http://www.lovebagstore.net, fell to accelerate car, the engine shaking, exhaust black smoke (black smoke is fuel combustion phenomenon of the net), fuel consumption is rising sharply.