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One of the byproducts from todays gasoilne is a lot of carbon build up on internal engine parts inclusing the intake, the intake valves and the top of the pistons and on your oxygen sensors in the exhaust manifolds. Decarbonation is where a mixture of chemicals is introduced into your engine while running and breaks down this carbon deposits either by a chemical reaction or a molecular bonding action. Once carbon begins to build up it begins to hold heat which will place heat in areas not designed for it. Especially on the back edge of intake valves, the fuel begins to be affected by the carbon deposit before it gets to burn completely and sometimes you will hear this as ping and knock. I have heard several good things about this procedure and will consider having it done in the future. One thing you can do to help stave off this carbon deposit is to buy top tier gasolines that have a lot more cleaning detergents in them. Do a Google search for top tier gasolines and you will find the name brand sof gasoline that have the best additives and they are not always the most expensive fuels out there. If nothing else, these top tier gasolines help reduce the build up of sulpher on the fuel sending unit in your gas tank. Try to be present when the decarbonation is done and watch what comes out of the exhaust. Your car should run better after you have it done. I am considering having it done at 50,000 miles on mine but that is a ways off. If your mechanic has suggested this, you can always ask him for the name of someone else that he did it for and call them and ask what they thought of the procedure. There are some do it your self kits out there but they may be a bit pricey and some units for the do it yourselfer are not quite as effective as a professional unit. Be aware some shops offer this as a way to just make money, so ask why you are being offered this procedure and see what is said, and then take some time to think about what I have explained to you and see if makes sense to have it done now, or wait.

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17y ago
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Q: What is engine decarbonation?
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