These mixture screws were factory set. Adjusting Tool; These tools are designed to adjust settings on computer controlled Rochester, DualJet, QuadraJet, and VaraJet carburetors on carbureted GM engines. Your order is for a single tool (1). These tools adjust various settings on Rochester QuadraJet, DualJet, & VaraJet carburetors on most GM vehicles having the 3C system.Weight: 3 oz. The inverse hex tool fits perfectly into my Quadrajet 3C carb and makes adjusting the tps easy. If you are using a Multi-use Tester, connect it to the Diagnosis port in your 3000GT/Stealth now 1/2” and 7/16” main and Solenoid Control Mixture Bleed, Air Idle (TPS), removes or Adjusts • fittings. These tools adjust various settings on Rochester QuadraJet, DualJet, & VaraJet carburetors on most GM vehicles having the 3C system. Dual wrench has a 10mm, 12 point box opening on one end and a 12mm, 12 point box opening on the other to fit hexagon nuts. In this tech article CAR CRAFT demonstrates how to rebuild an aging electric Quadrajet carburetor from a 1985 Chevrolet Monte Carlo and we install throttle shaft bushings and … HOOAI Carburetor Adjustment Tool Kit for Common 2 Cycle Carburator Engine - Carburetor Adjustment Tool Set Carburetor Tune up Adjusting Tool (10pcs + Cleaning Tool) 4.7 out of 5 stars 1,418 $14.86 $ 14 . These tools are designed to adjust settings on computer controlled Rochester, DualJet, QuadraJet, and … When I first took the carb apart I had to really work to get it out and didnt count how many turns it took. Capable of both fuel economy (for a V-8) and performance they made a name for themselves, although it is sometimes used as a curse. I didn't have one and, as you know, one cannot have too many tools. This book is ABSOLUTLEY invaluable in doing a rebuild. Visit our site for coupons and promotions. Details about Rochester Quadrajet Computer Controlled Carburetor Electronic E4ME TPS Tool Set. To test the Throttle Position Sensor, you can either use a Multi-use Tester or a Test Harness Set. Looks better than I thought, job well done. Various colors, will be shipped random. These tools are designed to adjust settings on computer controlled Rochester, DualJet, QuadraJet, and VaraJet carburetors on carbureted GM engines. The important factor is the number. Adjusting Tool; Carburetor; For Adjusting Idle / … IDLE MIXTURE SCREW LOCATIONS – (HOLLEY) The idle mixture screws are located on the sides of the metering block(s). Buick 1980-90 Cadillac 1980-82 Chevrolet 1980-90 Chevrolet trucks 1983-86 Oldsmobile 1980-90 Pontiac 1980-85. Subscribe to our newsletter to receive a $5 discount code instantly. Read more. PO Box 149 Carburetor Adjusting Tool, 90 Degree, Chrome Stainless Steel Driver, Blue Handle, 17 1/2 in. This tool has been selected to fit over the APT (adjustable part throttle) screw in the Quadrajets with internal APT. Part Number: MNP-08-0229 Remove the top plug (19) and adjust the TPS screw (18) to obtain a reading of 0.48VDC across the terminals. Buy Carburetor / Distributor Adjustment Tools - SER 2776 online from NAPA Auto Parts Stores. NOTE - If your meter probes are reversed, the reading will be -0.48VDC. Replaces Rochester OEM TPS# 10065259, 17063708, 17067351, 17067587, 17068612, 17078448, 17078516, 17078528. There are some special tools that are required to make the adjustments. Shop for Lisle Adjusting Tool Part #: 55250 for your vehicle. Both computer controlled, and non computer carbs. Moving the screw down (clockwise) creates a leaner part throttle mixture. Tools for modifying and tuning Rochester Quadrajet 4 barrel carburetors for racing or economy. I'd recommend it to anyone who wants to rebuild or learn about quadrajet carbs. hex 2.5mm and D­Double 10mm 7mm, 2mm, with carbs Quadrajet and Dualjet Varajet, Fit• W ARNING May Cause Cancer and Reproductive Harm www.P65Warnings.ca.gov. Attempting to remove the screws without doing this will usually result in the heads twisting off. These tools adjust various settings on Rochester QuadraJet, DualJet, & VaraJet carburetors on most GM vehicles having the 3C system. Remove plug from air horn and adjust your part throttle mixture. Universal Comoputer Controlled Carburetor Tool Set by OTC®. The Thexton 380 is the tool kit for making most of the mechanical adjustments like TPS feedback and the rich and lean stops for the primary metering rods. Unscrew the screws two and one half turns. This tool has been selected to fit over the APT (adjustable part throttle) screw in the Quadrajets with internal APT. Matching the color would get you the correct part. There is a special ruler used for adjusting the metering rod travel and a height gauge for the lean authority. Quadrajet Carburetor Tools. Bench adjust the mixture screws by using the double "D" tool to screw the mixture screws, located on the front lower edge of the carburetor, into the carburetor until they lightly seat. This tool set is essential for TPS adjustment, lean - rich mixture control solenoid adjustment, servicing metering jets, and the lean authority and idle bleed using the 2.5 mm double D adjustment tool. Have not used yet but it looks of good quality. Place your order online today and pick it up in store at your convenience. I also have the two optional Snap-On S6135 & S6136 carb tools to make things just a little easier for myself. Wrench is 8-1/4" long with a 2" offset. Replace the hole plug in the adjustment screw hole when the position is set; Idle Air Bleed This is a worthwhile piece to adjust properly too, especially if you have a lot of mods. The thin-section design makes it easy for working in close quarters. Jaw Cacity: 1-1/8" / 29 mmIncludes Wire cutter.Meets federal specifications GGG-W-00649. General Motors TPS-1 series throttle position sensor. I bought a kit with the proper tool to turn it, and a travel indicator/idle air bleed tool for $4 at Pep Boys (ask for a mixture adjusting kit, listed with the rebuild kits for the carb.) Substituting an electronic throttle position sensor has several potential advantages when used with a nitrous system configured to respond to a 0-5 Volt TPS signal. ... GM Computerized Idle Speed Control Adjusting Tool. Be sure to use our APT plug to keep the inside of your carb clean from dirt. Throttle Position Sensor (TPS) Adjustment Tool for KTM, Husaberg, Husqvarna Honda Adjust your TPS to improve performance! Reconnect the Throttle Position Sensor connector; Test the Throttle Position Sensor Output Voltage . The Quadrajet four-barrel carburetor was produced by the Rochester Carburetor Division of General Motors from 1965-'90. |  Privacy Notice, Genius Tools 2-1/2" Dr. 5-3/4" Jumbo Impact Socket (CR-Mo) - 920884, Genius Tools 3/4" Dr. 2-5/16" Impact Socket (CR-Mo) - 665274, Includes 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, and 5/8 inch stud remover and installe, Used to aid removal of the front shock absorber tube from the wheel bearing hous. Read the voltage of the TPS. Salamanca, NY 14779, Copyright © 2021 Toolsource.com. Get deals on automotive parts, truck parts and more. Plug in your testing device. 86 Throttle Position Sensor fits 1980-90 GM Rochester Quadrajets and Dualjet carburetors. Step 3 Just what exactly does this do? QUADRAJET ARTICLE Rochester's Quadrajet carburettors were a staple of General Motors V-8 powered vehicles from the late 1960s until the switch to electronic fuel injection was finished in the late 1980s. Fits: 1979-80 C-4 carburetors 1980 and up GM computer command control … ... go to your local parts store and see if they can get you the tomco tools for adjusting it. Nice aluminum tool, easy to grip and turn and doesn't take up much space in your tool box. The idle mixture screws are a different size double-D. Adjust this in 1/4 turn increments. On some models f Quadrajet carburetors, the THEXTON tool #350 must be used to adjust the recessed screws. Its ISDN number is 0-89586-301-4 and retails for $16.95 US. This tool has been selected to fit over the APT (adjustable part throttle) screw in the Quadrajets with internal APT. Some let through slightly more air than others, and adjusting the TPS voltage allows you to […] I used the brake booster vacuum line for the manifold vacuum source, and I adjusted the idle mixture screws with okay results since I did not have a decent baseline to work from. Note: this sale is for the single APT adjustment tool only. Other items in picture are examples of items needed. Set includes: 55250 Carburetor Adjusting Tool55300 "Double D" for GM, `79 thru present55310 1/4" Hex for pre-`78 GM55320 3/32" Hex for `78 thru present Chrysler 1.7L - 2.2L engines55330 4.5mm Hex for `78 and `79 GM55340 "O" Ring Replacement. The world`s most versatile tool - used for turning, cutting, tightening, clamping & twisting. Both computer controlled, and non computer carbs. Heavy-duty flexible shaft for easy access.Four adapters conveniently store in the hollow handle. APT adjustment tool, 2 sides for both types screws, APT Stud Internal Adjustable Part Throttle Screw. Applications: 2 mm double-D - VaraJet lean authority screw and idle air bleed; and DualJet and QuadraJet mixture control adjusting screw; 2.5 mm hex - DualJet and QuadraJet TPS adjusting screw Of items needed optional Snap-On S6135 & S6136 carb tools [ 362 ] for.! 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