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There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. When that is the case, I bend the accel. Disassembly2. Check any vents to make sure they are open. 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. It needs about 4 lbs of pressure. Both valves should be closed. This is an electronic rebuild manual, no physical copy will be provided. 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). Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Your friend will receive an email from you with a link to our site. When replacing them hold them tight against the wall while tightening the screw. but if it runs well you don't really need to make any adjustments. Is there a pointed check weight in the main discharge hole. 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. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. 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. Carter WCFB, 4 barrel metering rod adjustment instructions. The adjustment of the pump is important in order to get the required fuel. The Carter AFB uses weights, and therefore never goes out of adjustment. Can't find the answer you're looking for? WCFB Carburetor Cutting Out on Left Hand Turn. This is an electronic rebuild manual, no physical copy will be provided. Do not depress float lip against spring in needle, but let float rest of its own weight. 1: Carter WCFB idle mixture and speed adustment screw location. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 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. Fast, secure e-book download. Make sure the air horn contacts the inner wall of the bowl. 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. I. DISASSEMBLY. Must be made after fast idle adjustment. Hold throttle valve wide open and close choke valve as far as possible without forcing. BBS) and were basically an on/off condition similar to the function of a power valve. Can't find the answer you're looking for. 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. Air Bled has the venturi tube pointing down into the bore. It should not be opened up. Adjust idle screws D to produce a smooth idle of correct speed is obtained. I have repeated multiple times with same results. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Note te larger box, and the number of additional tools from the 1935 set. Probably around 4- 4.5lbs. If a loss of rpm is noted, or if the engine dies, and air leak exists. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Install the pump connector rod (D) in the outer hole, long stroke. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. 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). *New Accelerator Pump5. They know their stuff and provide technical assistance and guides in both paper and video formats. 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. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Float drop not set, or fuel pump pressure too low. 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 lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. The adjustment of the pump is important in order to get the required fuel. The mixture screw may be bent, or damaged. This box did not have a part number. Change the choke setting to index. You should feel some pressure and fluid should not be bypassing the check needle. The most complete document I have found. (note) The metering rods will fit into the jets loosely. All These Part Numbers Interchange Into Our Part No. 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. Carter WCFB, 4 barrel carburetor manual. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. With throttle valves seated in bores, dust cover and gasket in place. Coat threads of screw with sealing compound and install it. The flat surface of the pump arm should be parallel to the straight edge. 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. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. You need to run wire down all small passages. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Install the pump connector rod (D) in the outer hole, long stroke. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. Adjust by bending the choke connector rod at lower angle (H). Measure float height as illustrated above. 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. 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 throttle linkage to make sure that primary throttle valves come to full wide open position. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Gasket removed. Test the floats in hot water and if you get any bubbles then they are leaking. It's highlighted yellow and will look something like this. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Piston force is too much for linkage. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Hold in place and carefully tighten metering rod arm set screw (G). The accelerator pump circuit resides on the primary side of this carburetor. 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 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. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. 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 Hold air horn upright with floats hanging. *New Float6. Fig. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. 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? Carter WCFB Fast Idle With carburetor installed and engine warmed up. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Ethanol leaves deposits behind that acts like corrosion. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. Test the needle by holding it down gently with a brass drift punch. The fuel is also conducted through a passage in the air horn to the secondary needle seat. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Back out throttle stop screw until throttle valves seat in bores. They work fine when I push hard down on the piston. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! When I slow down to an idle, my engine runs rough. 1955 Chevy Hard starting after flooding. On the WCFB the check ball is usually at the bottom of the pump well. Tyler's Forgotten Car Rescue 22,933 views. 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. 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. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Quick test to see if the accelerator pump is working. Ethanol gas does not have much if any lubrication. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. 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. The fuel is also conducted through a passage in the air horn to the secondary needle seat. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Notice holes from which linkage rods are removed so they can Share. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Make sure manifold heat control valve is free. The accelerator pump circuit resides on the primary side of. Low fuel pump pressure always check you motors manual for the correct pressure. 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. 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! Refer to the Adjustment Data Table for adjustment dimensions. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Adjust by bending throttle connector rod at upper angle (B). Can fill the accelerator chamber with a syringe (through top open passages of forward barrels where choke butterfly is) and the jets will spray gas into forward chambers (and will idle and accelerate for about 15 seconds)but when that gas is depleted, the spraying stops. 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. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. The best-selling product Click now to browse 1957 LINCOLN ACCELERATOR PUMP CARTER WCFB FLUORELASTOMER CUP ETHANOL RESITANTIS we ship worldwide cch-rc.com, C $45.04 Free shipping for many products Find many great new & used options and get the best deals for 1957 LINCOLN ACCELERATOR PUMP CARTER WCFB FLUORELASTOMER CUP ETHANOL RESITANTIS at the . Product information . Examine the viton tip for any marks.Fuel pump pressure could be too high. Please complete the fields below to send your friend a link to this product. 3: Holley 4150 idle mixture and speed adjustment screws. All late model WCFB carburetors have three different length bowl cover screws. William C. Carter was born in Union City Tennessee in 1884. Adjust by bending lip of float, not float arm. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. No metering rod gauges are necessary. They are not meant to fill the hole, only to restrict it. Loosen the clamp screw A Press. Anti-Rust "Dichromate" Finish**4. Some have a coating to give it a better shelf life. The carburetor will flood. 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. Can't find the answer you're looking for? Be careful removing the intake check retainer. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. *New Main Body Gasket8. Blow through the intake check passage to be sure the passage is open. 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. Technical Details. Seat the intake check by tapping lightly in the hole to form a good seal. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Adjust by bending lip of float, not float arm. On 1956 models one point rich. Everyone Has Started an Engine in the . Make sure the air cleaner gasket does not block the bowl vents. Carter WCFB 4 Barrel Adjust Float. Some models have a pump relief check in the bottom of the fuel bowl. There should be a retainer keeping the check ball in place. Carter WCFB 4 Barrel Carburetor Float System. Watch this. Back out throttle lever set screw until throttle valves seat in bores of carburetor. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Any bubbles indicates a leak.Make sure the 2 floats are the same height. This is percolation. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Someone has installed it improperly. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. Ideas?? Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. 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 Adjust by bending arm (J) on choke trip lever. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. 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. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). 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 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. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. 60 pages of great info. Adjust by bending unloader lip on throttle shaft lever. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Secondarys are somehow stuck open (which amounts to a vacuum leak). These diagrams include: Fig. 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. The discharge check is seated at this time to prevent air being drawn into the pump well. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Measure from center top surface of pontoons to air horn. 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 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. This allows air instead of fuel to be drawn off the pump jets. See figure 9F-2. 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. a. b. We will contact you as soon as this product is available. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . You can also check the adjustment by measuring (F) which should be 18/64. The setups data is the same. Can't find the answer you're looking for? 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 Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. The single step rods were used on some of the price leader carburetors (i.e. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. When closing the throttle, the accelerator moves up in the pump well. 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 metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. 5:04. Can't find the answer you're looking for? The well should fill with fluid. 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. Sometimes scraping around the edges with an awl will remove the staking. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Make sure these are clear if you have percolation problems. 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 (. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. To correct, remove carburetor and turn it upside down. If not, then find the check ball and make sure it is loose. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. During high speed operation a vacuum exists at the pump jets. Can't find the answer you're looking for? These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. 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 A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Older kits 30-70s. Any pressure put on the needle will damage it. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Recheck float adjustments. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Adjust by bending the connector rod at the lower bend (E). 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. 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. The correct way is to use a fuel pump pressure gauge. They sometimes need trimming. Seat the discharge check by tapping lightly in the hole to form a good seal. 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. Enter Carb Number. Make sure the ball rattles. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. With carburetor installed and engine warmed up. Ultra-Sonic Cleaning3. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Hold air horn upside down with floats in place and gasket removed. Hold a straight edge across top of dust cover housing, next to the pump arm. 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. Put some fluid in theaccelerator pumpwell and press down on the pump. 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.