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Place the choke housing toward the left and remove upper right main body to throttle body screw. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Two ports act as calibrated air bleeds. Probably around 4- 4.5lbs. Adjust idle screws D to produce a smooth idle of correct speed is obtained. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Carter WCFB Rebuild Kit Selection Carter WCFB Build Sheets Carter WCFB Adjustments Carter WCFB 4 Barrel Carburetor Float System Carter WCFB Accelerator Pump BY CARB TYPE GENERAL TROUBLESHOOTING FAQs INJECTORS PURCHASE PARTS MANUALS BLOG Measure from center top surface of pontoons to air horn. This allows air instead of fuel to be drawn off the pump jets. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Blowing out passages will not get them clean enough. The balance passage also tends to prevent flooding in the event one of the needles should temporarily become stuck open by maintaining equal fuel level between the two float chambers. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. They know their stuff and provide technical assistance and guides in both paper and video formats. Also make sure one isnt rubbing on the side. FREE to our customers that buy a rebuild kit. Fuel is puffing out nozzles on primary circuit at idle on primary carb of a dual carb set carbs were just rebuilt what is the cause. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Anti-Rust "Dichromate" Finish**4. *New Accelerator Pump5. Watch on. Fuel enters the primary side of the carburetor through a strainer screen at the fuel inlet and is directed to the primary needle valve and seat. William C. Carter was born in Union City Tennessee in 1884. See figure 9F-2.A float lifter spring, which is connected to the lever arm of the primary float and to a bracket on the accelerator pump plunger, is incorporated to stabilize primary bowl fuel level and prevent float bounce upon sudden stops, or on rough roads (these springs are nowhere to be found). Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Make sure these are clear if you have percolation problems. Carter carburetors fitted with air bleed idle mixture adjustment also have fuel emulsion mixture needles, but these are sealed at the factory to limit the amount of fuel admitted during idle. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. . Each size must be used in its own location. I have repeated multiple times with same results. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. Could the float bowl actually be the problem? What Has Been Done to This Carburetor?1. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. A WGD usually has a pump arm like that of a WCFB (IIRC). Add a couple drops of oil to the leather. All late model WCFB carburetors have three different length bowl cover screws. but if it runs well you don't really need to make any adjustments. Back out throttle screw so that the throttle valve close completly. If hard starting still exists change the choke setting to one point lean. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Adjust by bending unloader lip on throttle shaft lever. You cannot go wrong with Mikes carburetor in any way. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Air Bled has the venturi tube pointing down into the bore. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. Hold air horn upright with floats hanging. Any pressure put on the needle will damage it. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. This eliminates any bog or hesitation when acceleration. One caveatits my impression that the float bowl is full because when I disconnect the fuel supply line from fuel pump (to card), it has pressure on the line. The discharge check is seated at this time to prevent air being drawn into the pump well. A bushing (sorry dont have size) can be permanently installed in the choke vacuum passage in main body casting provides a more positive seal at this point, and prevents fuel from leaking into this passage on left turns and stalling the engine because of too rich a mixture. Did the old gasket get removed? The well should fill with fluid. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. While holding the parts as indicated above, rotate the metering rod arm B until the finger on the arm at D contacts the lug on the vacuum piston link C. Primary & secondary float will probably have different measurements. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Check the low speed jets to make sure they are clear (#44). We will contact you as soon as this product is available. WCFB carburetors, althqugh basically all units are allke. features a Carter carburetor identification page and a function that allows you to conduct a search by entering an identification number Factory Carter AFB CFM Ratings Chart Rebuild pics The April 15th, 2019 - The carbs with 1 1 4 venturies and 1 7 16 primary bores and 1 11 16 Be careful removing the intake check retainer. Then close throttle. Both valves should be closed. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Some models have a pump relief check in the bottom of the fuel bowl. Ethanol leaves deposits behind that acts like corrosion. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. 1963-64 Studebaker Carter AFB 1962-1965 Chevrolet 327 and 409 engine carburetor manual 1958-1968 Lincoln carburetor manual AVS 1966 Chevrolet 327 and Marine Carter AVS carburetors BB Ball and Ball Single Barrel downdraft manual: 1939-60 Chrysler, Dodge, Plymouth Carter BB, BB1, BB1A and BB1D updraft Carter BB for IHC BBD There may be a blockage in the accelerator pump circuit which would also make it hard to pump.What is the carburetor number so we can make sure you have the correct pump?Polish the pump well with crocus cloth. The adjustment of the pump is important in order to get the required fuel. Everyone Has Started an Engine in the . Carter WCFB 4 Barrel Carburetor Float System. Carburetors equipped with an adjustable bowl vent require adjustment. If a loss of rpm is noted, or if the engine dies, and air leak exists. On 1956 models one point rich. Put some fluid in theaccelerator pumpwell and press down on the pump. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. Can't find the answer you're looking for? With choke valve tightly closed, tighten fast idle adjusting screw (K) (on high step of cam) until there is the clearance as listed on carburetor specification page between throttle valve and bore of carburetor, side opposite idle port. Ultra-Sonic Cleaning3. Hold a straight edge across top of dust cover housing, next to the pump arm. Fig. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. 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The Solid fuel is the later models BBDContents:00:00 intro00:34 air bled adjustments00:37 air bled float setting01:03 air bled fast idle type I01:25 air bled fast idle type II01:42 air bled fast idle type III01:58 air bled unloader02:24 air bled choke vacuum kick03:01 air bled automatic choke03:16 air bled pump04:08 air bled dashpot04:27 air bled idle speed \u0026 mixture04:58 air bled emission carburetors idle mixture06:00 air bled limiter cap06:36 solid fuel adjustments06:40 solid fuel float setting07:03 solid fuel metering rod07:27 solid fuel accelerator pump07:55 solid fuel bowl vent08:18 solid fuel fast idle cam08:43 solid fuel choke pull-off09:12 solid fuel automatic choke09:24 solid fuel egr dump valve09:46 solid fuel unloader10:08 solid fuel high altitude10:28 solid fuel idle speed \u0026 mixture12:11 solid fuel Limiter cap12:37 solid fuel fst idle12:51 solid fuel throttle positioner13:56 solid fuel vacuum throttle positioner14:31 solid fuel sol-vac15:04 solid fuel dashpot15:28 solid fuel transducer The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Make sure there is a check needle below the main discharge. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Adjust by bending lip of float, not float arm. Fuel enters the primary side of the carburetor through a strainer screen at the fuel inlet and is directed to the primary needle valve and . This restricts the flow of fuel. This is percolation. The manual says to back out the throttle stop screw and hold the fast idle cam in the "choke open" position, then screw in the throttle stop screw until it just contacts the throttle lever arm, then give it another full turn. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Can't find the answer you're looking for? Secondarys are somehow stuck open (which amounts to a vacuum leak). 2: Carter AFB idle mixture and speed adjustment screws. The fuel is also conducted through a passage in the air horn to the secondary needle seat. When that is the case, I bend the accel. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. All These Part Numbers Interchange Into Our Part No. The download link will expire in 30 days. WCFB Carburetor Cutting Out on Left Hand Turn. Press down on vacuum piston link C until metering rods bottom in the carburetor body. Carter WCFB Rebuild kits: Rebuild Kits. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. Any bubbles indicates a leak.Make sure the 2 floats are the same height. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Eckler's Premier Quality Products 57132129 Chevy Carburetor Rebuild Kit Carter WCFB Replacement Kit Includes All Gaskets, Seals, Check Balls, Springs, Accelerator Pump & Needle Valve Read more CARTER 4 Barrel WCFB DUAL CARBURETOR KITS & FUEL FILTERS 1961-65 CHEVROLET 1955-56 DESOTO April 18, 2018 Carter Carburetors Rebuild Kits There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Recheck float adjustments. Technical Details. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Carter WCFB Carburetor Catalog Free WCFB Carburetor Manuals These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. 5:04. Outside top of early Carter tool box with correct decal. Seat the intake check by tapping lightly in the hole to form a good seal. Put a straight edge across the dust cover as illustrated. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. During high speed operation a vacuum exists at the pump jets. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. *New Float6. Can't find the answer you're looking for? Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. 60 pages of great info. With bowl cover assembly inverted and float resting on pin in seated needle, and with gasket removed, the distance from the bowl cover to the top of float should be 7/64. Check any vents to make sure they are open. Hold air horn upside down with floats in place and gasket removed. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). The balance passage also tends to prevent flooding in the event one of the needles should temporarily become stuck open by maintaining equal fuel level between the two float chambers. Make sure the air horn contacts the inner wall of the bowl. Must be made after fast idle adjustment. b. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. Test the floats in hot water and if you get any bubbles then they are leaking. To correct, remove carburetor and turn it upside down. Product information . Refer to the Adjustment Data Table for adjustment dimensions. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Fast, secure e-book download. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Coat threads of screw with sealing compound and install it. Master Technician Tool Set (early, circa 1935, for 1923~1935 Carter carburetors all makes - most tools then current) Carter Master Technician Tool Set about 1951. Make sure the air cleaner gasket does not block the bowl vents. Coat threads of screw with sealing compound and install it. Recheck unloader settings with carburetor on the engine. Carter 2 Barrel BBD Adjustments Mikes Carburetor 21.5K subscribers Subscribe 7.9K views 1 year ago In this video we are going to show you how to do the various adjustments on both the Air. The WCFB carburetor which came on some of the earliest Clogged idle tube, or passages in the idle circuit. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. They sometimes need trimming. Metering rods for the WCFB have been out of production for several years now. Can't find the answer you're looking for? Rotate throttle stop screw E until engine idle at approx 500 RPM. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. As the accelerator is released and the primary throttle plates are closed to the idle position, the upward movement of the pump plunger and attached spring bracket exerts tension on the spring and tends to stabilize the float in a level position. Take the top off and put the pump in the well all the way to the bottom. Make sure manifold heat control valve is free. The Carter AFB uses weights, and therefore never goes out of adjustment. *New Airhorn Gasket7. It's highlighted yellow and will look something like this. When closing the throttle, the accelerator moves up in the pump well. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). As for the pump not squirting.I suspect the pump well isnt filling up. Back out throttle lever set screw until throttle valves seat in bores of carburetor. However, it is very similar and I found it very useful. The accelerator pump circuit resides on the primary side of. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. In this video we are going to show you how to do the various adjustments on both the Air Bled and the Solid Fuel type of BBD carburetors. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Blow through the intake check passage to be sure the passage is open. Please complete the fields below to send your friend a link to this product. In my repeated attempts to get the accelerator valve to pump, the car has run for several minutes combinedplenty of time to get the float bowl full. Notice holes from which linkage rods are removed so they can Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Pulloffs : CUFWCFB2 $ 0 . Adjust by bending arm (J) on choke trip lever. The ends of the connector rod should point to the throttle arm side. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. The main body is partitioned into two compartments (primary and secondary), each containing a double pontoon float and lever assembly and a needle valve and seat. When adjusting the screws doesn't change the RPM then it means there is a problem with either the air, or the amount of fuel. One is in the secondary venturi and the other just above the throttle plate. Find many great new & used options and get the best deals for 19571958 Plymouth Fury Carter WCFB Carburetor *Remanufactured at the best online prices at eBay! Piston force is too much for linkage. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. The metering rod adjustment should be done after the pump adjustment. Adjust by bending throttle connector rod at upper angle (B). 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Do not depress float lip against spring in needle, but let float rest of its own weight. With mineral spirits in the float bowl, Raise the pump. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. The mixture screw may be bent, or damaged. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Carter WCFB 4 Barrel Adjust Float. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. What more could you ask for? Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Ultra-Sonic Cleaning3. Can't find the answer you're looking for. 1st check to make sure the fast idle linkage isnt holding the valves open. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. The flat surface of the pump arm should be parallel to the straight edge. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Some have a coating to give it a better shelf life. Adjust by bending lip of float, not float arm. Be sure these ports are clear. A float lifter spring, which is connected to the lever arm of the primary float and to a bracket on the accelerator pump plunger, is incorporated to stabilize primary bowl fuel level and prevent float bounce upon sudden stops, or on rough roads (these springs are nowhere to be found). On the WCFB the check ball is usually at the bottom of the pump well. 1: Carter WCFB idle mixture and speed adustment screw location. The flat on top of the pump arm should be parallel to the straight edge. I. DISASSEMBLY. The carburetor will flood. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Back out throttle stop screw until throttle valves seat in bores. Each float on the float assembly should be at the same height and centered so that they dont rub the side of the float bowl. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Enter Carb Number. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Ethanol gas does not have much if any lubrication. This is an electronic rebuild manual, no physical copy will be provided. Founded by William Carter in 1909, the Carter Carburetor Company produced units such as the AVS, AFB and 385-CFM WCFB for dozens of years. Adjust by bending float arms, making sure both pontoons on each float are the same height. It should not be opened up. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. The setups data is the same. As the accelerator is released and the primary throttle plates are closed to the idle position, the upward movement of the pump plunger and attached spring bracket exerts tension on the spring and tends to stabilize the float in a level position. Hold in place and carefully tighten metering rod arm set screw (G). Fig. In this video I show you how to replace the fast idle spring on the WCFB carburetor. Gasket between bowl and base is installed backwards (easy to do). Rotate screw C, or bend tang, until throttle valves are open the distance listed in, With throttle valves held wide open, there should be a clearance between upper edge of choke valve and the inner wall of air horn (. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring.