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

Part No. OTC7667 Warranty Details  
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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