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Old 09-16-2009, 04:00 PM
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Tamper proof idle mixture screw tool

Here is another; the smog quadrajets have the plugged idle mixture screws. Once you get the plugs out, then you have to deal with a recessed tamper proof screw. I've run into torx style and the flat blade style. I used an old brass vacuum fitting, filed a flat groove to fit the idle mixture screw. I later crimped it onto an old GM points adjusting tool for flexability. Cost $0.00
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