pre-adjustment (bench adj.) 4.4 out of 5 stars 335. quadrajet idle adjustment, Fast Idle Adjusting Screw B-09249 B-09251 c D. E. 320. These mixture screws were factory set. This made any additional tuning impossible and prevented any adjustment that could affect tailpipe emissions. (OEM #1705947, Spring for APT Power Piston Metering Adjustment, Throttle Blade, 1.375" - Rochester Quadrajet & Varajet, Throttle Blade, 1.375" - Rochester Quadrajet & Varajet (Aluminum, Needle and Seat Assembly - Non-Windowed, .115", Needle and Seat Assembly - Non-Windowed, .124", Needle and Seat Assembly - Non-Windowed, .132", Needle and Seat Assembly - Non-Windowed, .145", Needle and Seat Assembly, early style w/2 screws, Needle and Seat Assembly, early style w/O-Rings, Needle and Seat Repair Assembly, Repairs stripped needle and sea, Adjustable Part Throttle (APT) Screw, for power piston adjustmen, Quadrajet / Dualjet Power Piston Retaining Bushing, Quadrajet / Dualjet Power Piston Spring Assortment, 4 color code, Retaining Clip for Quadrajet Power Piston, Quadrajet Choke Pull-Off, fits 1967-74 GM, Mercury Marine (#3801, Quadrajet Choke Pull-Off, fits 1970 Cadillac, 1970 Pontiac (#380, Quadrajet Choke Pull-Off, fits 1970-72 Oldsmobile, 1973-74 Ponti, Quadrajet Choke Pull-Off, fits 1971-74 Cadillac, 1971-72 Pontiac, Quadrajet Choke Pull-Off, fits 1972-1973 Chevy (#3815), Quadrajet Choke Pull-Off, fits 1973 Chevy (#3814). ... AIR VALVE ADJUSTMENT (5-Pack), Extra Thick Air Cleaner Gasket - 5 1/4" diameter, O-Ring - Rochester Idle Air Bleed (Upper) & Holley Fuel Transfer, Quadrajet Secondary Metering Well Plugs, 3/8" O-ringed plug (pai, Quadrajet Secondary Metering Well Plugs, 7/16" O-ringed plug(pai, Rubber Idle Vent Valves - Carter, Rochester, Throttle Lever Bushing & Grommet kit- Rochester, Carter, Holley, Idle Mixture Screw- 10-32 x 1.311" (#2010G), Idle Mixture Screws - (#2003A) Metric Hex Head Replacement, Idle Mixture Screws and Springs, # 17062905 (#2003) metric, Idle Mixture Screws for Rochester & Carter (#2009C), Idle Mixture Screws, # 7048854, 7048858 (#2001), Idle Mixture Screws, 10-32 x 1.85" (#2003B), Idle Mixture Screws, 10-32 x 2.05" (#2003C), Rochester Idle Mixture Screw, # 7048532 (#2006G), 1" x 5/8"-18 - Self Tapping Inlet Fitting, 1" x 5/8"-18 - Self Tapping Inlet Fitting (Long), 1"-20 x 5/8-18" - Banjo Inlet Fitting - Converts front inlet to, 5/8"-18 x #6 AN Fuel Inlet Adapter Fitting, 5/8"-18 x #8 Fuel Inlet AN Adapter Fitting, 7/8"-20 x 1/2-20 - Self Tapping Inlet Fitting, 7/8"-20 x 1/8"-Pipe Thread - .500" Extended Thread Inlet Fittin, 7/8"-20 x 5/8"-18 - .500" Extended Thread Inlet Fitting, 7/8"-20 x 5/8"-18 - .650" Extended Thread Inlet Fitting, 7/8"-20 x 5/8"-18 - Inlet Fitting (long), 7/8"-20 x 5/8"-18 - Self Tapping Inlet Fitting, 7/8"-20 x 5/8"-18 - Self Tapping Inlet Fitting (Long), Service- Fuel Inlet Thread Repair, Heli-Coil Installation, 1" In, Service- Fuel Inlet Thread Repair, Heli-Coil Installation, 7/8"-, Threaded Carburetor Insert Installation Kit for 1"-20 inlet fitt, Threaded Carburetor Insert Installation Kit for 7/8"-20 inlet fi, USED- Fuel Inlet Fitting - 1"- 20 Thread x 5/8"-18 (Original Roc, Quadrajet Calibration Tuning Kit for (ALL YEARS) Q-Jets (Except, Bulk Pack Q-jet Carb Jets (65,67,69,71,73,75,77,79 -8 pairs), "B" 37B NOS Quadrajet Primary Metering Rods, .037"/.026", "B" 38B NOS Quadrajet Primary Metering Rods, .038"/.026", "B" 39B NOS Quadrajet Primary Metering Rods, .039"/.026", "B" 43B Quadrajet / Dualjet Primary Metering Rods, .043"/.026" t, "B" 44B Quadrajet / Dualjet Primary Metering Rods, .044"/.026" t, "B" 45B NOS Quadrajet Primary Metering Rods, .045"/.026", "B" 45B Quadrajet / Dualjet Primary Metering Rods, .045"/.026" t, "B" 47B NOS Quadrajet Primary Metering Rods, .047"/.026", "B" 48B NOS Quadrajet Primary Metering Rods, .048"/.026", "B" 48B Quadrajet / Dualjet Primary Metering Rods, .048"/.026" t, "B" 49B NOS Quadrajet Primary Metering Rods, .049"/.026", "B" 49B Quadrajet / Dualjet Primary Metering Rods, .049"/.026" t, "B" 50B Quadrajet / Dualjet Primary Metering Rods, .050"/.026" t, "J" 32J NOS Quadrajet Primary Metering Rods, .032"/.026", "J" 36J NOS Quadrajet Primary Metering Rods, .036"/.026", "J" 37J NOS Quadrajet Primary Metering Rods, .037"/.026", "J" 38J NOS Quadrajet Primary Metering Rods, .038"/.026", "J" 40J NOS Quadrajet Primary Metering Rods, .040"/.026", "J" 41J NOS Quadrajet Primary Metering Rods, .041"/.026", "J" 54J Quadrajet Primary Metering Rods, .054"/.026", "J" 56J Quadrajet Primary Metering Rods, .056"/.026", "K" 37K NOS Quadrajet Primary Metering Rods, .037"/.026", "K" 38K NOS Quadrajet Primary Metering Rods, .038"/.026", "K" 40K NOS Quadrajet Primary Metering Rods, .040"/.026", "K" 41K NOS Quadrajet Primary Metering Rods, .041"/.026", "K" 42K NOS Quadrajet Primary Metering Rods, .042"/.026", "K" 43K NOS Quadrajet Primary Metering Rods, .043"/.026", "K" 44K NOS Quadrajet Primary Metering Rods, .044"/.026", "K" 44K Quadrajet / Dualjet Primary Metering Rods .044"/.026" ti, "K" 45K NOS Quadrajet Primary Metering Rods, .045"/.026", "K" 46K NOS Quadrajet Primary Metering Rods, .046"/.026", "K" 47K NOS Quadrajet Primary Metering Rods, .047"/.026", "K" 48K NOS Quadrajet Primary Metering Rods, .048"/.026", "K" 49K NOS Quadrajet Primary Metering Rods, .049"/.026", "K" 50K NOS Quadrajet Primary Metering Rods, .050"/.026", "K" 51K NOS Quadrajet Primary Metering Rods, .051"/.026", "K" 52K NOS Quadrajet Primary Metering Rods, .052"/.026", "K" 53K NOS Quadrajet Primary Metering Rods, .053"/.026", "K" 54K NOS Quadrajet Primary Metering Rods, .054"/.026", "L" 41L NOS Quadrajet Primary Metering Rods, .041"/.026", "M" 48M Quadrajet / Dualjet Primary Metering Rods .048"/.036" ti, "M" 50M NOS Quadrajet Primary Metering Rods, .050"/.036", "M" 52M Quadrajet / Dualjet Primary Metering Rods .052"/.036" ti, "M" 53M Quadrajet / Dualjet Primary Metering Rods .053"/.036" ti, "M" 54M NOS Quadrajet Primary Metering Rods, .054"/.036", "M" 54M Quadrajet / Dualjet Primary Metering Rods .054"/.036" ti, "M" 55M NOS Quadrajet Primary Metering Rods, .055"/.036", "P" 46P NOS Quadrajet Primary Metering Rods, .046"/.026", "P" 47P NOS Quadrajet Primary Metering Rods, .047"/.026", "P" 48P NOS Quadrajet Primary Metering Rods, .048"/.026", "P" 49P NOS Quadrajet Primary Metering Rods, .049"/.026", "P" 50P NOS Quadrajet Primary Metering Rods, .050"/.026", "P" 51P NOS Quadrajet Primary Metering Rods, .051"/.026", "P" 52P NOS Quadrajet Primary Metering Rods, .052"/.026", "P" 55P NOS Quadrajet Primary Metering Rods, .055"/.026", "P" 57P NOS Quadrajet Primary Metering Rods, .057"/.026", "P" 58P Quadrajet Primary Metering Rods, .058"/.026", "P" 58P Quadrajet / Dualjet Primary Metering Rods .058"/.026" ti, "P" 59P NOS Quadrajet Primary Metering Rods, .059"/.026", "P" 60P Quadrajet Primary Metering Rods, .060"/.026", "P" 61P Quadrajet Primary Metering Rods, .061"/.026", "P" 62P Quadrajet Primary Metering Rods, .062"/.026", "P" 63P Quadrajet Primary Metering Rods, .063"/.026", "P" 64P Quadrajet Primary Metering Rods, .064"/.026", "P" 67P Quadrajet Primary Metering Rods, .067"/.026", "P" 68P Quadrajet Primary Metering Rods, .068"/.026", "P" 69P Quadrajet Primary Metering Rods, .069"/.026", "P" 70P Quadrajet Primary Metering Rods, .070"/.026", "P" 72P Quadrajet Primary Metering Rods, .072"/.026", "S" 62S NOS Quadrajet Primary Metering Rods, .062"/.036", 35 Quadrajet / Dualjet Primary Metering Rods, .035"/.026" tip, (, 37 Quadrajet / Dualjet Primary Metering Rods, .037"/.026" tip, (, 39 Quadrajet / Dualjet Primary Metering Rods, .039"/.026" tip, (, 40 NOS Quadrajet Primary Metering Rods, .040"/.026", 41 NOS Quadrajet Primary Metering Rods, .041"/.026", 41 Quadrajet / Dualjet Primary Metering Rods, .041"/.026" tip, (, 43 NOS Quadrajet Primary Metering Rods, .043"/.026", 44 NOS Quadrajet Primary Metering Rods, .044"/.026", 46 NOS Quadrajet Primary Metering Rods, .046"/.026", Power Piston (APT) Metering Adjustment Screw, Quadrajet / Dualjet Primary Rod Retaining Spring, fits early sty, Quadrajet / Dualjet Primary Rod Retaining Spring, fits later sty, Quadrajet / Dualjet Springs for Primary Metering Rods (2 springs, Used - "B" 36B - Quadrajet / Dualjet Primary Metering Rods, .036, USED - "B" 37B - Quadrajet / Dualjet Primary Metering Rods, .036, Used - "B" 39B - Quadrajet / Dualjet Primary Metering Rods, .039, Used - "B" 40B - Quadrajet / Dualjet Primary Metering Rods, .040, Used - "C" 49C - Quadrajet / Dualjet Primary Metering Rods, .049, Used - "C" 53C - Quadrajet / Dualjet Primary Metering Rods, .053, Used - "J" 41J - Quadrajet / Dualjet Primary Metering Rods, .041, Used - "M" 50M - Quadrajet / Dualjet Primary Metering Rods, .050, Used - "M" 51M - Quadrajet / Dualjet Primary Metering Rods, .051, Used - "M" 55M - Quadrajet / Dualjet Primary Metering Rods, .055, Used - "P" 49P - Quadrajet / Dualjet Primary Metering Rods, .049, Used - 37 - Quadrajet / Dualjet Primary Metering Rods, .037"/.02, Used - 43 - Quadrajet / Dualjet Primary Metering Rods, .043"/.02, Used - 44 - Quadrajet / Dualjet Primary Metering Rods, .044"/.02, Used - 45 - Quadrajet / Dualjet Primary Metering Rods, .045"/.02, Used - Auxiliary Metering Rod - "35B" Quadrajet (Single), Used - Auxiliary Metering Rod - "50B" Quadrajet (Single), USED - Quadrajet Secondary Hanger I (.555"), USED - Quadrajet Secondary Hanger J (.560"), USED - Quadrajet Secondary Hanger L (.570"), USED - Quadrajet Secondary Hanger M (.575"), USED - Quadrajet Secondary Hanger N (.580"), USED - Quadrajet Secondary Hanger O (.585"), USED - Quadrajet Secondary Hanger R (.595"), USED - Quadrajet Secondary Hanger S (.600"), USED - Quadrajet Secondary Hanger T (.605"), AX - Quadrajet Secondary Metering Rods, .0397" tip diameter, CE - Quadrajet Secondary Metering Rods, .0413" tip diameter, CK - Quadrajet Secondary Metering Rods, .0527" tip diameter, CL - Quadrajet Secondary Metering Rods, .0667" tip diameter, DA - Quadrajet Secondary Metering Rods, .0443" tip diameter, High Flow Quadrajet Secondary Jet Assembly - .146", Used - AN - Quadrajet Secondary Metering Rods, .0697" tip, Used - AT - Quadrajet Secondary Metering Rods, .0667" tip, Used - BC - Quadrajet Secondary Metering Rods, .0581" tip, Used - BE - Quadrajet Secondary Metering Rods, .0410" tip, Used - BF - Quadrajet Secondary Metering Rods, .0397" tip, Used - BS - Quadrajet Secondary Metering Rods, .0947" tip, Used - BU - Quadrajet Secondary Metering Rods, .0547" tip, Used - CG - Quadrajet Secondary Metering Rods, .0774" tip, Used - CH - Quadrajet Secondary Metering Rods, .0567" tip, Used - CP - Quadrajet Secondary Metering Rods, .0567" tip, Used - CT - Quadrajet Secondary Metering Rods, .0774" tip, Used - CV - Quadrajet Secondary Metering Rods, .0527" tip, Used - DB - Quadrajet Secondary Metering Rods, .0697" tip, Used - DD - Quadrajet Secondary Metering Rods, .1047" tip, Used - DH - Quadrajet Secondary Metering Rods, .0567" tip, Used - DL - Quadrajet Secondary Metering Rods, .0679" tip, Used - DP - Quadrajet Secondary Metering Rods, .0686" tip, Used - DR - Quadrajet Secondary Metering Rods, .0570" tip, Used - DW - Quadrajet Secondary Metering Rods, .0874" tip, Adjustment Shaft for Quadrajet Secondary Air Valve, Quadrajet Secondary Throttle Shaft Spring, Accelerator Pump Linkage Rod, fits 1970-80 Quadrajets (#3132), Accelerator Pump Linkage Rod, fits 1981 and later Q-Jets, Clip on Accelerator Pump Linkage, fits 1966-80 Quadrajets (#3133, Choke / Vacuum Break Rod, fits 1973-1974 Chevy w/QJ #3084, Choke Rod, fits 1966-67 Chevy, 1966-68 Pontiac, Choke Rod, fits 1967-74 Buick, 1967-74 Cadillac, Auxiliary Vacuum Brake Rod, 1975-79 Buick,Olds,Pontiac (#3059), Auxiliary Vacuum Brake Rod, fits 1980 & up GM (#3057), Secondary Vacuum Brake Rod, fits 1979 & up GM (#3056), Vacuum Brake Rod, fits 1970-71 Chevrolet (#3052), Vacuum Brake Rod, fits 1972-79 Chevrolet (#3054), Vacuum Brake Rod, fits 1977 & up GM (#3055), Vacuum Break Rod, fits 1970-76 Oldsmobile (#3053), Quadrajet Float Bowl Insert- for carbs with M.C.S. Lisle 55250 Carburetor Adjusting Tool. 0000032051 00000 n 0000004862 00000 n Try one direction first, if the bog gets worse, move in the other direction. 0000001280 00000 n Quadrajet Rebuild Kit, 6 Cyl - Buick 1980-84, Cadillac 1981-83, Quadrajet Rebuild Kit, Buick 1966-1967 4001A, Quadrajet Rebuild Kit, Buick 1966-74, Chevy 1967-68, Pontiac 196, Quadrajet Rebuild Kit, Buick 1975-76, 79-80, Chevy 1976-77, GMC, Quadrajet Rebuild Kit, Buick 1975-77, Olds 1975-77, Pontiac 1975, Quadrajet Rebuild Kit, Buick 1977-87, Chevy 1987, GMC 1977-78, O, Quadrajet Rebuild Kit, Buick 1980-90, Cadillac 1986-90, Chevy 19, Quadrajet Rebuild Kit, Cadillac 1967-69, Pontiac 1968-69 4002B, Quadrajet Rebuild Kit, Chevrolet 1969-1970-1971-1972 4004A, Quadrajet Rebuild Kit, Chevrolet 1972 4006, Quadrajet Rebuild Kit, Chevy 1965-67, Olds 1966 4001C, Quadrajet Rebuild Kit, Chevy 1973-74, GMC 1972-79, Checker 1973-, Quadrajet Rebuild Kit, Chevy 1976-80, GMC 1980-89, Pontiac 1976. Known for its chrome finish, the AFB is also known for its user-friendly adjustment points. i screw them both all the way in and the truck still starts and has high rpms please help me Turn each mixture screw in (lean) slowly in 1/8th of a revolution increments until the engine speed starts to drop. 152 28 The Carter AFB four-barrel carburetor has been among the most popular choices among automotive enthusiasts for decades. Mixture Control Solenoid Lean Mixture Adjustment Screw for GM C, Mixture Control Solenoid Lean Mixture Adjustment Screw for GM CCC Quadrajets, Click here for instructions on enabling javascript in your browser, Mixture Control Solenoid Lean Mixture Adjustment Screw for GM CCC Quadrajets, Mixture Control Solenoid - 1979 thru 1980, Throttle Position Sensor - 1980 thru 1990 GM, Pigtail Connector for Mixture Control Solenoid, Solenoid Body Spring - for 1981-90 GM Mixture Control Solenoids, USED - TPS Spring - Rochester Quadrajet, Dualjet, Varajet, MCS Lean Mixture Adjustment Screw Spring - for 1981-90 GM Mixt, Mixture Control Solenoid Screw - for 1981-90 GM Mixture Control, Mixture Control Solenoid Plunger Spring for GM CCC Quadrajets, Accelerator Pump- "Double Lip" Cup, 21/32", Ethanol Resistant, Accelerator Pump- "Garter Spring" Cup, 21/32", Ethanol Resistant, Accelerator Pump- "Garter Spring" Cup, 3/4", Alcohol Resistant, Check Balls, Accelerator Pump, 5 pack of 3/16 steel balls, Duration Spring for Accelerator Pump (Long), Duration Spring for Accelerator Pump (Short), Garter Spring for 21/32" Accelerator Pump Cup, Idle Vent Valve Lever - 1967-69 Rochester Quadrajets, Quadrajet Accelerator Pump Arm Casting Repair, Quadrajet Accelerator Pump Assembly, 2.43" Length, 21/32", Quadrajet Accelerator Pump Assembly, 2.53" Length, 21/32", Quadrajet Accelerator Pump Assembly, 2.61" Length, 21/32", Quadrajet Accelerator Pump Assembly, 2.76" Length, 21/32", Quadrajet TPS Stem & Accelerator Pump Retainer, package of 5, Roll Pins, Accelerator Pump and Lever Hinge, 5-Pack, Spring Retainer for Accelerator Pump Plunger. Quadrajet Power Cap. 360. 0000005654 00000 n Quadrajet Choke Adjustment Oldsmobile V8 Engine ... Motorcycle Carb Problems 3. rich mixture, lean mixture, and incorrect adjustment. 0000020869 00000 n 0000002858 00000 n Be sure to use our APT plug to keep the inside of your carb clean from dirt. $11.42 $ 11. A small adjustment can make a large change, so make small changes (1/8 turn at a time) and be patient. Idle mixture screws on the Quadrajet must be adjusted equally in order to have a balanced air/fuel mixture. 0000020452 00000 n Past idle the primary metering circuit comes into play and then the mixture is controlled by the power piston spring, and the primary metering rods and jets. 0000010706 00000 n How to Tweak Your Rochester Quadrajet for More Power and Better Mileage. Quadrajet/Dualjet Rochesters have a fast idle adjustment screw that is separate from the base idle screw.Here's how to locate it. 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