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steps are an adaptation of 'old skool' valve cleaning. We used ketchup bottle (rest. squeeze bottles with little openings) to spray a stream of water in the carb almost to the point of stalling. The temp 'shock' to the valves/pistons is what breaks the carbon loose. (Trans fluid is VERY heavy in detergents; that is why it is recommended for lifter cleanup) Trans fluid should not be run through the intake of a catalyzed car, it can clog the converter over time. (it was the 'original' FI cleaner added to the gas) The mechanical methods they describe (suction port, etc) are correct for decarbonization; its what a shop will do. Just needs to use the correct solvents. And IF the car is heavily carboned it will make a huge difference in performance, more noticable in small displacement motors. Personally, I agree with Buzz (see some of his tech postings) I think using Redline FI cleaner in small portions for each tank of fuel will clean not only the injectors but slowly remove any carbon build up and prevent future build up as well.
Billy 'No matter what you do, you will never get away from you....' from "Kicks"; Mark Lindsay circa 1966
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