With the development of "self media", many car owners have raised their awareness of the car to a new height. We all know the harm of carbon accumulation, but we also know that carbon accumulation cannot avoid production. At the same time, we also realize that a happy brother is helpful to reduce carbon accumulation. So now we have more and more friends with happy brothers. However, new problems may arise whether it is to use a hanging bottle or a fuel oil treasure. Among them, the increase in fuel consumption for cleaning and the lighting after engine failure are two typical problems. I'd like to introduce them separately below, hoping to solve them for you.
1. After cleaning the carbon, the fuel consumption increases. The owners of BMW 325i complain that after cleaning the carbon, they think the car will be clean and powerful, and the fuel consumption will be reduced. But contrary to their original intention, 11 oil before cleaning the carbon, and 15 oil after cleaning. What is the devil? There are two reasons, one is normal. Because after cleaning the carbon, the engine computer has not yet responded to it, so it needs to be renewed Learn the fine tuning of air intake and fuel injection. It will take some time. Let's go to the 4S store to have another race or run hundreds of kilometers to have a look. Another reason may be the real failure - three-way catalyst blockage and serious carbon deposition. If carbon deposition of car cleaning block may prevent three-way blockage, three-way blockage will affect the normal operation of oxygen sensor and the accuracy of engine receiving oxygen sensor signal, so it is unable to accurately control fuel injection, intake and ignition, and then increase fuel consumption. If in addition to the fuel consumption surge, there is also a phenomenon of power reduction and easy stall, then you should pay attention to check as early as possible.
2. After cleaning the carbon deposit, the engine fault indicator is on. There are two reasons for this. Another reason may be that the engine control is not normal after the carbon deposition of the intake system is cleaned. BMW variable intake valve lifting system does not work, intake valve system is in emergency state, controlled by throttle valve. It can be solved by re matching the variable intake valve lifting system.
Finally, let's summarize that the vehicles prone to the above two problems are usually very serious in carbon emissions, plus the use of a bottle or a large number of happy brothers to clean up the carbon emissions on the road. Therefore, if we use happy brothers to prevent delayed carbon accumulation, we suggest using it in a long-term intermittent way, such as using 1 or 2 bottles every 3000 km, rather than running 40 or 50000 km, and then using it in large quantities. For carburized vehicles, it is best to disassemble.