How to Clean Fuel Injectors

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The first step in cleaning fuel injectors is to go into the engine and disconnect the fuel lines, after which detergent needs to be added to the gasoline in the cleaning machine. Learn about using a cleaning machine on fuel injectors with help from an ASE-certified master automobile technician in this free video on cleaning fuel injectors.

Part of the Video Series: Auto Repair & Maintenance
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Video Transcript

Our first step is to locate the fuel lines going into the engine, and on this particular engine they are located here and they have a built-in tool to actually disconnect them. A warning, this is gasoline that we're dealing with here so it's very important to make sure that this is not done at a hot engine or the, the chance of ignition would certainly be much higher and certainly keep a, a fuel, a fire extinguisher close in hand. Our next step in the process is to add the detergent to the gasoline that we have in the cleaning machine itself. So we'll remove the cap and add the contents of detergent bottle to the machine. This may seem similar to a process that you might do with your own car to add some fuel injector, fuel injection cleaning solution to the fuel tank; but this product is much more powerful than what you typically put into your own tank. And then what we'll do is actually start the machine and that we'll set the time to approximately ten minutes. During this period of time gasoline with the detergent in it is being circulated through the fuel rail with the purpose of actually cleaning the small screens that are in the fuel injector. Also during this time we take the opportunity to clean the throttle body as well.


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