Each size must be used in its own location. New fuel pumps are especially suspect. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Coat threads of screw with sealing compound and install it. (note) The metering rods will fit into the jets loosely. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Can't find the answer you're looking for? They are staked in the hole. Everyone Has Started an Engine in the . It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Be careful removing the intake check retainer. 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. Recheck unloader settings with carburetor on the engine. 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. cm448. 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. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. 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 is percolation. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Any pressure put on the needle will damage it. It should not be opened up. Make sure the ball rattles. Both valves should be closed. Make sure there is a check needle below the main discharge. The most complete document I have found. The metering rod adjustment should be done after the pump adjustment. The ends of the connector rod should point to the throttle arm side. Some models have a pump relief check in the bottom of the fuel bowl. In this video I show you how to replace the fast idle spring on the WCFB carburetor. 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 Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Can't find the answer you're looking for. Carter WCFB 4 Barrel Accelerator Pump Circuit 3,951 views Jul 13, 2018 33 Dislike Share Mikes Carburetor 20K subscribers https://www.carburetor-parts.com is providing this video about how the. Can't find the answer you're looking for? The adjustment of the pump is important in order to get the required fuel. Change the choke setting to index. Sometimes scraping around the edges with an awl will remove the staking. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. 3: Holley 4150 idle mixture and speed adjustment screws. The single step rods were used on some of the price leader carburetors (i.e. Examine the viton tip for any marks.Fuel pump pressure could be too high. The download link will expire in 30 days. Make sure these are clear if you have percolation problems. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. 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. 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 Good quality print. All late model WCFB carburetors have three different length bowl cover screws. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Carter WCFB 4 Barrel Carburetor Float System. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. The well should fill with fluid. Outside top of early Carter tool box with correct decal. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. *New Main Body Gasket8. As for the pump not squirting.I suspect the pump well isnt filling up. What more could you ask for? Back out throttle screw so that the throttle valve close completly. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. a. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Rotate throttle stop screw E until engine idle at approx 500 RPM. but if it runs well you don't really need to make any adjustments. Adjust by bending the choke connector rod at lower angle (H). 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. They know their stuff and provide technical assistance and guides in both paper and video formats. Carter WCFB Fast Idle With carburetor installed and engine warmed up. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. The flat on top of the pump arm should be parallel to the straight edge. 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. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? 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. Disassembly2. With carburetor installed and engine warmed up. Please complete the fields below to send your friend a link to this product. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. During high speed operation a vacuum exists at the pump jets. 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! As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Seat the discharge check by tapping lightly in the hole to form a good seal. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. 1955 Pontiac - Loading or Carburetor Flooding Measure from center top surface of pontoons to air horn. Carter WCFB Build Sheets The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. Use a brass drift punch. If not then clean it and try again. If hard starting still exists change the choke setting to one point lean. 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. Your friend will receive an email from you with a link to our site. Must be made after fast idle adjustment. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. Also make sure one isnt rubbing on the side. This restricts the flow of fuel. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. 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. WCFB Carburetor Cutting Out on Left Hand Turn. Back out throttle stop screw until throttle valves seat in bores. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. Watch on. Note te larger box, and the number of additional tools from the 1935 set. Adjust by bending the connector rod at the lower bend (E). 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. 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). One is in the secondary venturi and the other just above the throttle plate. Notice holes from which linkage rods are removed so they can Place the choke housing toward the left and remove upper right main body to throttle body screw. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. A WGD usually has a pump arm like that of a WCFB (IIRC). Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Hold air horn upright with floats hanging. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Blow through the intake check passage to be sure the passage is open. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Fig. 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. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. This check prevents excessive pressure in the discharge passage during acceleration. 2: Carter AFB idle mixture and speed adjustment screws. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. 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 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. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Adjust by bending lip of float, not float arm. Place universal pump travel gauge T109-117S (if you happen to have one as they are not available) inverted on edge of dust cover boss of bowl cover. Quick test to see if the accelerator pump is working. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Hold air horn upside down with floats in place and gasket removed. With mineral spirits in the float bowl, Raise the pump. To correct, remove carburetor and turn it upside down. . When done you should see very little daylight around the valve. Install the pump connector rod (D) in the outer hole, long stroke. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. You need to run wire down all small passages. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. 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. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Adjust by bending float arms, making sure both pontoons on each float are the same height. This is an electronic rebuild manual, no physical copy will be provided. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. Ethanol leaves deposits behind that acts like corrosion. 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. Make sure the pontoons are centered and will not rub the bowl sides. Gasket removed as shown A. Did the old gasket get removed? The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Ultra-Sonic Cleaning3. This restricts the flow of fuel. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 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. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Free shipping for many products! Procedure is as follows: with the throttle lever set screw backed out and throttle valves seated in bores of carburetor, press down on vacumeter link (D) until metering rods bottom at (E). *New Accelerator Pump5. However, it is very similar and I found it very useful. These diagrams include: Fig. 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 . The WCFB carburetor which came on some of the earliest 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. Most of the single step rods were steel. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Metering rods for the WCFB have been out of production for several years now. 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. You should feel some pressure and fluid should not be bypassing the check needle. Correct by removing any burrs or nicks. One of the butterflies is open about 1/8 with the carburetor dis assembled. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 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. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. The adjustment of the pump is important in order to get the required fuel. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. 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. 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. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. 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. To correct, remove carburetor and turn it upside down. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. I. DISASSEMBLY. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Watch this. Probably around 4- 4.5lbs. When that is the case, I bend the accel. 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). 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. Adjusting the WCFB float level and float drop. The setups data is the same. They sometimes need trimming. See figure 9F-2. Test the fuel pump to be sure it isnt putting out too much pressure. Press down on vacuum piston link C until metering rods bottom in the carburetor body. All These Part Numbers Interchange Into Our Part No. Older kits 30-70s. 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. The distance from the dust cover boss to the top of the plunger shaft should be 1/2 inch (distance from base to tip of finger on gauge) (C). Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Could the float bowl actually be the problem? With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Pulloffs : CUFWCFB2 $ 0 . 60 pages of great info. 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 You cannot go wrong with Mikes carburetor in any way. DO NOT apply any pressure on the needle. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Technical Details. When closing the throttle, the accelerator moves up in the pump well. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. Can you help me out? Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Some have a coating to give it a better shelf life. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Adjust by bending throttle connector rod at deepest angle as shown. With throttle valves seated in bores, dust cover and gasket in place. Do not depress float lip against spring in needle, but let float rest of its own weight. 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. Check any vents to make sure they are open. 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. Disassembly2. 1955 Chevy Hard starting after flooding. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Do not depress float lip against spring in needle, but let float rest of its own weight. b. Other than that, great company to deal with. Probably not since only one butterfly is open. Refer to the Adjustment Data Table for adjustment dimensions. 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. Float drop not set, or fuel pump pressure too low. Can't find the answer you're looking for? The discharge check is seated at this time to prevent air being drawn into the pump well. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. We will contact you as soon as this product is available. FREE to our customers that buy a rebuild kit. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Measure float height as illustrated above. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Fig. 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. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. 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. Gasket between bowl and base is installed backwards (easy to do). The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads.A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. This is an electronic rebuild manual, no physical copy will be provided. The ends of the connector rod should point to the throttle arm side. The piston is brass and can be damaged very easily. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Coat threads of screw with sealing compound and install it. Can't find the answer you're looking for? Share. Adjust by bending arm (J) on choke trip lever. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. If not, then find the check ball and make sure it is loose. Put some fluid in theaccelerator pumpwell and press down on the pump. When replacing them hold them tight against the wall while tightening the screw. Anti-Rust "Dichromate" Finish**4. 1: Carter WCFB idle mixture and speed adustment screw location. 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. 1st check to make sure the fast idle linkage isnt holding the valves open. Test the floats in hot water and if you get any bubbles then they are leaking. Can't find the answer you're looking for? The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Secondarys are somehow stuck open (which amounts to a vacuum leak). Hold a straight edge across top of dust cover housing, next to the pump arm. Make sure the air cleaner gasket does not block the bowl vents. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Adjust by bending lip of float, not float arm. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn The accelerator pump circuit resides on the primary side of this carburetor. Carter WCFB 4 Barrel Carburetor Float System. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. *New Airhorn Gasket7. Solid fuel has the 2 tubes pointing up. Test the needle by holding it down gently with a brass drift punch. Two ports act as calibrated air bleeds. On 1956 models one point rich. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. 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. 5:04. 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.
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