Disassembly2. Carter WGD Adjustments Float Level 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. One is in the secondary venturi and the other just above the throttle plate. 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 metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Make sure the ball rattles. Back off the idle screw so that the throttle plates close completely. 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. Notice holes from which linkage rods are removed so they can Everyone Has Started an Engine in the . 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). Probably not since only one butterfly is open. Adjust by bending throttle connector rod at upper angle (B). The Carter AFB uses weights, and therefore never goes out of adjustment. Take the top off and put the pump in the well all the way to the bottom. It needs to go up and down easily.Is there aspringunder the power piston?Are the venturi cluster gaskets sitting flat and not curled over? When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Hold air horn upright with floats hanging. When removing valves they should be marked so that they get put back the same way. Is there a pointed check weight in the main discharge hole. A stand pipe is provided at both needle seats as an additional trap for foreign material that might prevent the needle valves from seating properly. Tyler's Forgotten Car Rescue 22,933 views. Carter WCFB, 4 barrel carburetor manual. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. *New Accelerator Pump5. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? *New Float6. Make sure the pump relief check is clean. Could the float bowl actually be the problem? If not then clean it and try again. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. As the engine gains in RPM, the vacuum drops and the metering rods are pulled out of the main jet allowing more fuel to flow. Put some fluid in theaccelerator pumpwell and press down on the pump. 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. Examine the viton tip for any marks.Fuel pump pressure could be too high. Make sure the pontoons are centered and will not rub the bowl sides. 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. This check prevents excessive pressure in the discharge passage during acceleration. These diagrams include: Fig. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Then close throttle. . What more could you ask for? 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. Can you help me out? The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. 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. You cannot go wrong with Mikes carburetor in any way. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Fig. Check your auto manual for the spec, but somewhere around 4-5 lbs would be good.Be sure the power piston is not frozen in one position. Piston force is too much for linkage. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. This is an electronic rebuild manual, no physical copy will be provided. Fast, secure e-book download. Make sure manifold heat control valve is free. The carburetor will flood. Share. The correct way is to use a fuel pump pressure gauge. 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 . To correct, remove carburetor and turn it upside down. Put a straight edge across the dust cover as illustrated. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Add a couple drops of oil to the leather. Press down on vacuum piston link C until metering rods bottom in the carburetor body. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. They are staked in the hole. Change the choke setting to index. With carburetor installed and engine warmed up. Check throttle linkage to make sure that primary throttle valves come to full wide open position. A stand pipe is provided at both needle seats as an additional trap for foreign material that might prevent the needle valves from seating properly. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. You can also check the adjustment by measuring (F) which should be 18/64. New fuel pumps are especially suspect. Make sure the air cleaner gasket does not block the bowl vents. intro Carter WCFB 4 Barrel Carburetor Rebuild Mikes Carburetor 21.5K subscribers Subscribe 51 Share 3.1K views 9 months ago Disassemble & assemble your Carter WCFB 4 barrel. This eliminates any bog or hesitation when acceleration. With throttle valves seated in bores, dust cover and gasket in place. Check any vents to make sure they are open. The most complete document I have found. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. 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. When the piston is frozen you may have to drill a small hole in the bottom of the float bowl, just under the piston and hammer it out. Can't find the answer you're looking for. See figure 9F-2. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. 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. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Carter WCFB 4 Barrel Accelerator Pump Circuit Carter BB Carburetor Assembly Part 1 of 2 Rochester Quadrajet Idle Tube Removal Tunning Rochestor Quadrajet 4 barrel Carburetor Mark Osborne. 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. When that is the case, I bend the accel. Also make sure one isnt rubbing on the side. 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. The accelerator pump circuit resides on the primary side of this carburetor. 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. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. Install the pump connector rod (D) in the outer hole, long stroke. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. During high speed operation a vacuum exists at the pump jets. When closing the throttle, the accelerator moves up in the pump well. Recheck unloader settings with carburetor on the engine. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Carter WCFB Rebuild kits: Rebuild Kits. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Sometimes scraping around the edges with an awl will remove the staking. 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. When I slow down to an idle, my engine runs rough. 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. Back out throttle screw so that the throttle valve close completly. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. They are not meant to fill the hole, only to restrict it. Adjust by bending lip of float, not float arm. Rochester and Carter replacement parts are interchangeable. Test the floats in hot water and if you get any bubbles then they are leaking. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. With mineral spirits in the float bowl, Raise the pump. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. 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. 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 Seat the discharge check by tapping lightly in the hole to form a good seal. Aspringis inserted in the power piston hole, then the piston. Loosen the clamp screw A Press. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. It's highlighted yellow and will look something like this. Ethanol gas does not have much if any lubrication. Clogged idle tube, or passages in the idle circuit. Adjust by bending the connector rod at the lower bend (E). I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Quick test to see if the accelerator pump is working. Low fuel pump pressure always check you motors manual for the correct pressure. The single step rods were used on some of the price leader carburetors (i.e. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. This spring is a bit complicated so this video will be very helpful when you change your spring.Find this WCFB spring here: https://www.carburetor-parts.com/wcfb-66d400.htmlFind WCFB parts here:https://www.carburetor-parts.com/wcfb-partscontents:00:0000:42 removing fast idle cam assembly00:56 taking the assembly apart piece by piece01:07 removing the old spring01:22 installing spring02:15 which direction does the pieces go?02:38 assembling the pieces03:16 installing the cam assembly onto the carburetor As for the pump not squirting.I suspect the pump well isnt filling up. 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. Fig. Back out throttle stop screw until throttle valves seat in bores. A WGD usually has a pump arm like that of a WCFB (IIRC). This can be done by looking at the impression on bowl cover gasket. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Coat threads of screw with sealing compound and install it. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). WCFB carburetors, althqugh basically all units are allke. (note) The metering rods will fit into the jets loosely. It should not be opened up. Please complete the fields below to send your friend a link to this product. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. You need to run wire down all small passages. 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! Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. Both Carter and Rochester engineers determined that, on some applications, the float level in the primary side of the carburetor should be different than in the secondary side of the carburetor. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. cm448. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Blowing out passages will not get them clean enough. You should feel some pressure and fluid should not be bypassing the check needle. Do not depress float lip against spring in needle, but let float rest of its own weight. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Adjust by bending lip of float, not float arm. Correct by removing any burrs or nicks. 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. 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). Can't find the answer you're looking for? All These Part Numbers Interchange Into Our Part No. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Carburetors equipped with an adjustable bowl vent require adjustment. parts. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Technical Details. Carter WCFB 4 Barrel Carburetor Float System. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. a. Did the old gasket get removed? DO NOT apply any pressure on the needle. Carter WCFB Build Sheets *New Main Body Gasket8. The file is in PDF format, you can download and save/print a copy. Blow through the intake check passage to be sure the passage is open. This is percolation. Can't find the answer you're looking for? Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Any pressure put on the needle will damage it. To correct, remove carburetor and turn it upside down. Once engine speed gets high enough, the carburetor vacuum is strong enough to pull fuel through the main jet and the accelerator pump circuit is no longer used. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn The WCFB carburetor which came on some of the earliest b. What Has Been Done to This Carburetor?1. Make sure the air horn contacts the inner wall of the bowl. The adjustment of the pump is important in order to get the required fuel. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Carter WCFB Fast Idle With carburetor installed and engine warmed up. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. To prevent fuel from being drawn through the pump circuit, the passage to the pump jets is vented by a cross passage to the carburetor bowl above the fuel level. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. The flat surface of the pump arm should be parallel to the straight edge. Secondarys are somehow stuck open (which amounts to a vacuum leak). If a loss of rpm is noted, or if the engine dies, and air leak exists. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Seat the intake check by tapping lightly in the hole to form a good seal. 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 Carter WCFB Metering Rods 4,292 views Jul 15, 2018 28 Dislike Share Save Mikes Carburetor 18.7K subscribers https://www.carburetor-part.com is providing this video about the Carter WCFB 4. Run a blunt object around the inside of the leather cup to make sure any coating is broken. FREE to our customers that buy a rebuild kit. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. It needs about 4 lbs of pressure. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. 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. Ultra-Sonic Cleaning3. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. On 1956 models one point rich. Hold a straight edge across top of dust cover housing, next to the pump arm. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. Free shipping for many products! Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. Note te larger box, and the number of additional tools from the 1935 set. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. WCFB Carburetor Cutting Out on Left Hand Turn. 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. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Adjusting the WCFB float level and float drop. 2: Carter AFB idle mixture and speed adjustment screws. Contact Us Home Blog FAQ's Technical Help My Account LoginRegister Examples of Carb Numbers search 0$0 Carburetor Parts by Make & Model Scroll to see more Aero Coach Carburetor Parts Alfa Romeo American Bantam American General American LaFrance American Motors Nash Rambler Auburn Audi If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. Air Bled has the venturi tube pointing down into the bore. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Good quality print. 1st check to make sure the fast idle linkage isnt holding the valves open. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. When done you should see very little daylight around the valve. The download link will expire in 30 days. The piston is brass and can be damaged very easily. 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. Carter WCFB 4 Barrel Carburetor Float System. I. DISASSEMBLY. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. With engine running, check for an air leak at front left corner of carburetor between throttle body and bowl by squirting carb cleaner at this point. Disassembly2. 3: Holley 4150 idle mixture and speed adjustment screws. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Carter WCFB, 4 barrel metering rod adjustment instructions. They sometimes need trimming. Hold air horn upside down with floats in place and gasket removed. 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 However, it is very similar and I found it very useful. Outside top of early Carter tool box with correct decal. Can't find the answer you're looking for? Install the pump connector rod (D) in the outer hole, long stroke. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Gasket between bowl and base is installed backwards (easy to do). Adjusting the WCFB float level & float drop: 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. Metering rods for the WCFB have been out of production for several years now. 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. The metering rod adjustment should be done after the pump adjustment. The flat on top of the pump arm should be parallel to the straight edge. I have repeated multiple times with same results. Gasket removed. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. 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. 60 pages of great info. Measure from center top surface of pontoons to air horn. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Hold throttle valve wide open and close choke valve as far as possible without forcing. Both valves should be closed. Probably around 4- 4.5lbs. Each size must be used in its own location. Use a brass drift punch. Coat threads of screw with sealing compound and install it. The accelerator pump circuit resides on the primary side of. Watch this. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Rotate throttle stop screw E until engine idle at approx 500 RPM. One of the butterflies is open about 1/8 with the carburetor dis assembled. Solid fuel has the 2 tubes pointing up. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. This allows air instead of fuel to be drawn off the pump jets. The setups data is the same. Carter WCFB 4 Barrel Adjust Float. Someone has installed it improperly. Can't find the answer you're looking for? *New Airhorn Gasket7. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. This restricts the flow of fuel. If not, then find the check ball and make sure it is loose. 5:04. Float drop not set, or fuel pump pressure too low. Make sure these are clear if you have percolation problems. Ethanol leaves deposits behind that acts like corrosion. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 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. Carter WCFB Carburetor E-Manual Download eWCFB, The file is in PDF format, you can download and save/print a copy, FREE to our customers that buy a rebuild kit. The well should fill with fluid. There should be a retainer keeping the check ball in place. Other than that, great company to deal with. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. In this video I show you how to replace the fast idle spring on the WCFB carburetor.