I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. The correct way is to use a fuel pump pressure gauge. 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 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. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. 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. We will contact you as soon as this product is available. cm448. 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. It needs about 4 lbs of pressure. Ideas?? As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Pulloffs : CUFWCFB2 $ 0 . Run a blunt object around the inside of the leather cup to make sure any coating is broken. 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? 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! Gasket removed as shown A. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. 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 4 Barrel Carburetor Float System. Piston force is too much for linkage. 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 . The flat on top of the pump arm should be parallel to the straight edge. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). 1955 Chevy Hard starting after flooding. 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. 2: Carter AFB idle mixture and speed adjustment screws. 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. Two ports act as calibrated air bleeds. Most of the single step rods were steel. Blow through the intake check passage to be sure the passage is open. 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 all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. It's highlighted yellow and will look something like this. Some models have a pump relief check in the bottom of the fuel bowl. Can't find the answer you're looking for? Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. b. This can be done by looking at the impression on bowl cover gasket. Then close throttle. Quick test to see if the accelerator pump is working. The flat surface of the pump arm should be parallel to the straight edge. 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. 1: Carter WCFB idle mixture and speed adustment screw location. *New Float6. Any pressure put on the needle will damage it. Carter WCFB, 4 barrel metering rod adjustment instructions. Low fuel pump pressure always check you motors manual for the correct pressure. Fig. Add a couple drops of oil to the leather. 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. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. 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. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. This box did not have a part number. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. Aspringis inserted in the power piston hole, then the piston. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. This eliminates any bog or hesitation when acceleration. 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. a. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Share. Carter WCFB 4 Barrel Adjust Float. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Hold in place and carefully tighten metering rod arm set screw (G). 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. Ethanol gas does not have much if any lubrication. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. This is percolation. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Metering rods for the WCFB have been out of production for several years now. It should not be opened up. You cannot go wrong with Mikes carburetor in any way. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. This restricts the flow of fuel. 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 Take the top off and put the pump in the well all the way to the bottom. 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. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Make sure manifold heat control valve is free. Back out throttle lever set screw until throttle valves seat in bores of carburetor. Recheck unloader settings with carburetor on the engine. Watch on. Carter WCFB 4 Barrel Carburetor Float System. Recheck float adjustments. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Some have a coating to give it a better shelf life. With mineral spirits in the float bowl, Raise the pump. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Can you help me out? If a loss of rpm is noted, or if the engine dies, and air leak exists. 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. 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. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 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. Hold air horn upside down with floats in place and gasket removed. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Free shipping for many products! The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. 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. See figure 9F-2. The ends of the connector rod should point to the throttle arm side. Probably not since only one butterfly is open. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. William C. Carter was born in Union City Tennessee in 1884. Enter Carb Number. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. FREE to our customers that buy a rebuild kit. Do not depress float lip against spring in needle, but let float rest of its own weight. Tyler's Forgotten Car Rescue 22,933 views. Carter WCFB 4 Barrel Carburetor Float System. Seat the discharge check by tapping lightly in the hole to form a good seal. 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. Put a straight edge across the dust cover as illustrated. 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. Someone has installed it improperly. Adjust idle screws D to produce a smooth idle of correct speed is obtained. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. The WCFB carburetor which came on some of the earliest When that is the case, I bend the accel. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Outside top of early Carter tool box with correct decal. If hard starting still exists change the choke setting to one point lean. 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. This allows air instead of fuel to be drawn off the pump jets. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. You can also check the adjustment by measuring (F) which should be 18/64. Test the needle by holding it down gently with a brass drift punch. When closing the throttle, the accelerator moves up in the pump well. Other than that, great company to deal with. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Put some fluid in theaccelerator pumpwell and press down on the pump. Carter WCFB, 4 barrel carburetor manual. Back out throttle stop screw until throttle valves seat in bores. Technical Details. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. Measure from center top surface of pontoons to air horn. Fig. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. Fast, secure e-book download. 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. They are not meant to fill the hole, only to restrict it. Both valves should be closed. Ethanol leaves deposits behind that acts like corrosion. 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. They sometimes need trimming. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. DO NOT apply any pressure on the needle. The Carter AFB uses weights, and therefore never goes out of adjustment. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. 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. Sometimes scraping around the edges with an awl will remove the staking. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Refer to the Adjustment Data Table for adjustment dimensions. Check any vents to make sure they are open. 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. Measure float height as illustrated above. 5:04. 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 Seat the intake check by tapping lightly in the hole to form a good seal. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. but if it runs well you don't really need to make any adjustments. WCFB Carburetor Cutting Out on Left Hand Turn. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. Install the pump connector rod (D) in the outer hole, long stroke. One is in the secondary venturi and the other just above the throttle plate. 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 Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. What more could you ask for? The single step rods were used on some of the price leader carburetors (i.e. Back off the idle screw so that the throttle plates close completely. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Check throttle linkage to make sure that primary throttle valves come to full wide open position. 1st check to make sure the fast idle linkage isnt holding the valves open. Do not depress float lip against spring in needle, but let float rest of its own weight. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Disassembly2. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. The most complete document I have found. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Can't find the answer you're looking for? Disassembly2. Adjust by bending arm (J) on choke trip lever. The adjustment of the pump is important in order to get the required fuel. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Can't find the answer you're looking for. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. The mixture screw may be bent, or damaged. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Be careful removing the intake check retainer. 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. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). Measure from toe B to air horn. Also make sure one isnt rubbing on the side. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. 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. *New Accelerator Pump5. Everyone Has Started an Engine in the . However, it is very similar and I found it very useful. *New Main Body Gasket8. You may even have to resort to finding a used WCFB carburetor. 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. During high speed operation a vacuum exists at the pump jets. The accelerator pump circuit resides on the primary side of this carburetor. 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. There should be a retainer keeping the check ball in place. Adjust by bending lip of float, not float arm. Carburetors equipped with an adjustable bowl vent require adjustment. Ultra-Sonic Cleaning3. Make sure the air horn contacts the inner wall of the 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. Examine the viton tip for any marks.Fuel pump pressure could be too high. Blowing out passages will not get them clean enough. The well should fill with fluid. 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. Clogged idle tube, or passages in the idle circuit. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Can't find the answer you're looking for? Make sure the pontoons are centered and will not rub the bowl sides. As for the pump not squirting.I suspect the pump well isnt filling up. 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. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. The download link will expire in 30 days. Rochester and Carter replacement parts are interchangeable. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Note te larger box, and the number of additional tools from the 1935 set. Rotate throttle stop screw E until engine idle at approx 500 RPM. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). 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. 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 replacing them hold them tight against the wall while tightening the screw. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. 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. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Be sure these ports are clear. 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 Adjust Float Mikes Carburetor 21.4K subscribers 5.5K views 4 years ago https://www.carburetor-parts.com is providing this video about adjusting the float level and. On the WCFB the check ball is usually at the bottom of the pump well. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Could the float bowl actually be the problem? Any bubbles indicates a leak.Make sure the 2 floats are the same height. The adjustment of the pump is important in order to get the required fuel. Your friend will receive an email from you with a link to our site. Hold throttle valve wide open and close choke valve as far as possible without forcing. Adjust by bending the connector rod at the lower bend (E). All These Part Numbers Interchange Into Our Part No. Good quality print. Make sure the pump relief check is clean. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. If not then clean it and try again. 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. Make sure the ball rattles. 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). To correct, remove carburetor and turn it upside down. Carter WCFB Rebuild kits: Rebuild Kits. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. parts. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. When I slow down to an idle, my engine runs rough. They know their stuff and provide technical assistance and guides in both paper and video formats. One of the butterflies is open about 1/8 with the carburetor dis assembled. Product information . Make sure the air cleaner gasket does not block the bowl vents. Air Bled has the venturi tube pointing down into the bore. (note) The metering rods will fit into the jets loosely. Adjust by bending lip of float, not float arm. Hold air horn upright with floats hanging. Can't find the answer you're looking for? 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn In this video I show you how to replace the fast idle spring on the WCFB carburetor. This is an electronic rebuild manual, no physical copy will be provided. Check the low speed jets to make sure they are clear (#44). The discharge check is seated at this time to prevent air being drawn into the pump well. All late model WCFB carburetors have three different length bowl cover screws. If not, then find the check ball and make sure it is loose. Carter WCFB Build Sheets The ends of the connector rod should point to the throttle arm side. Carter WCFB Fast Idle With carburetor installed and engine warmed up. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Solid fuel has the 2 tubes pointing up. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. 1955 Pontiac - Loading or Carburetor Flooding Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! 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 It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. 60 pages of great info. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Test the fuel pump to be sure it isnt putting out too much pressure. Watch this. The piston is brass and can be damaged very easily. They work fine when I push hard down on the piston. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. This restricts the flow of fuel. 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. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Adjusting the WCFB float level and float drop. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. Change the choke setting to index. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Adjust by bending throttle connector rod at deepest angle as shown. 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).
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