GM Computer-Controlled Carburetor Tool Set
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OTC GM Computer-Controlled Carburetor Tool Set

Part No. OTC7667 Warranty Details  
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These tools adjust various settings on Rochester Quadra Jet, DualJet, and VaraJet carburetors on most GM vehicles having the 3C system Applications include: 2mm double-D - VaraJet lean authority screw and idle air bleed; and DualJet and QuadraJet mixture control adjusting screw; 2.5mm hex - DualJet and QuadraJet TPS adjusting screw; 7mm double D - DualJet and QuadraJet main metering jets; 10mm double D - DualJet and QuadraJet mixture control solenoid-rich screw.
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