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What engine do you have?
What injector cleaner did you use an how?
An in tank injector cleaner is more maintenance than anything. They don't do a great job at cleaning big build ups but rather get rid of deposits over time and keep from building new ones. To clean them without removing the injectors you need to run the car off of the cleaner by putting it in line by removing the fuel lines from the filter. Seafoam and redline does a great job at this and power service if you have a diesel. The liquimolly stuff isn't great.
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