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The video will tell you how I changed the rings on the injectors and cleaned the injectors themselves. In theory, it's not complicated, but it's better to take the original rings, because there is a high risk of jamming and gasoline leaks, which can result in a fire. The work actually takes only 1-2 hours. After cleaning, the consumption decreased a little and the engine began to run quieter and smoother (most likely there was air leakage due to the old rings) #ToyotaPrius #injectorcleaning #DIYrepair