Unfortunately, despite what the computer says, you should replace all the fuel injectors and I hope all of the sugar is out of the system. Otherwise you will be back to replacing compoents again if it is not out of the system first. Since the gas tank feeds all the spark plugs, you cannot be sure that not all of them were impacted to some degree. Just one was impacted enough that your computer recognized enough. Having others not working well won't make the engine last longer. Best of luck.
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