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Re: 1983 F-150 4.9L rough idle, hot only
Posted to Technical Discussion Forum on 2/28/2006

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Might have a blockage in the idle circuit in the cabruretor. Access the idle screw, make it "non-tamperproof", remove it, do the carb cleaner & air thing, and try again with it open about 4 turns to s... Login to read more.