Anti-Rust "Dichromate" Finish**4. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Test the needle by holding it down gently with a brass drift punch. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. 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 . It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Be sure these ports are clear. 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. The flat on top of the pump arm should be parallel to the straight edge. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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. What Has Been Done to This Carburetor?1. Fast, secure e-book download. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Do not depress float lip against spring in needle, but let float rest of its own weight. Make sure these are clear if you have percolation problems. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Any pressure put on the needle will damage it. Can you help me out? 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 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. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. parts. They know their stuff and provide technical assistance and guides in both paper and video formats. Can't find the answer you're looking for? We will contact you as soon as this product is available. They work fine when I push hard down on the piston. Back out throttle screw so that the throttle valve close completly. Place the choke housing toward the left and remove upper right main body to throttle body screw. Carter WCFB 4 Barrel Carburetor Float System. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. William C. Carter was born in Union City Tennessee in 1884. Gasket removed as shown A. 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. Install the pump connector rod (D) in the outer hole, long stroke. The ends of the connector rod should point to the throttle arm side. They are not meant to fill the hole, only to restrict it. Float drop not set, or fuel pump pressure too low. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. The fuel is also conducted through a passage in the air horn to the secondary needle seat. 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. Make sure the air cleaner gasket does not block the bowl vents. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. Must be made after fast idle adjustment. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Enter Carb Number. 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. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and 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. Make sure the ball rattles. Piston force is too much for linkage. Back out throttle lever set screw until throttle valves seat in bores of carburetor. The mixture screw may be bent, or damaged. Tyler's Forgotten Car Rescue 22,933 views. Do not depress float lip against spring in needle, but let float rest of its own weight. The ends of the connector rod should point to the throttle arm side. Be careful removing the intake check retainer. If not, then find the check ball and make sure it is loose. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 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. 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. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Can't find the answer you're looking for? Carter WCFB 4 Barrel Carburetor Float System. 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). The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Free shipping for many products! The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. The discharge check is seated at this time to prevent air being drawn into the pump well. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. All These Part Numbers Interchange Into Our Part No. Carter WCFB, 4 barrel carburetor manual. Adjust by bending the choke connector rod at lower angle (H). Adjusting the WCFB float level and float drop. Hold throttle valve wide open and close choke valve as far as possible without forcing. Someone has installed it improperly. Adjust by bending the connector rod at the lower bend (E). Correct by removing any burrs or nicks. The Carter AFB uses weights, and therefore never goes out of adjustment. 5:04. When closing the throttle, the accelerator moves up in the pump well. Loosen the clamp screw A Press. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. WCFB carburetors, althqugh basically all units are allke. Watch on. As for the pump not squirting.I suspect the pump well isnt filling up. When removing valves they should be marked so that they get put back the same way. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Add a couple drops of oil to the leather. Blowing out passages will not get them clean enough. 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. Ideas?? Hold in place and carefully tighten metering rod arm set screw (G). 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. Good quality print. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. You should feel some pressure and fluid should not be bypassing the check needle. 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 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. Hold a straight edge across top of dust cover housing, next to the pump arm. Both valves should be closed. With throttle valves seated in bores, dust cover and gasket in place. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. b. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. This allows air instead of fuel to be drawn off the pump jets. The correct way is to use a fuel pump pressure gauge. 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). 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. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Pulloffs : CUFWCFB2 $ 0 . The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Test the floats in hot water and if you get any bubbles then they are leaking. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. 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! Ethanol leaves deposits behind that acts like corrosion. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Sometimes scraping around the edges with an awl will remove the staking. Test the fuel pump to be sure it isnt putting out too much pressure. . A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Take the top off and put the pump in the well all the way to the bottom. 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. 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 restricts the flow of fuel. 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. Rotate throttle stop screw E until engine idle at approx 500 RPM. 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. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . 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. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Measure from center top surface of pontoons to air horn. When replacing them hold them tight against the wall while tightening the screw. These diagrams include: Fig. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. 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. Ethanol gas does not have much if any lubrication. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Older kits 30-70s. The setups data is the same. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Carter WCFB 4 Barrel Carburetor Float System. New fuel pumps are especially suspect. a. DO NOT apply any pressure on the needle. During high speed operation a vacuum exists at the pump jets. This can be done by looking at the impression on bowl cover gasket. To correct, remove carburetor and turn it upside down. Hold air horn upright with floats hanging. *New Main Body Gasket8. 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. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Recheck float adjustments. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. *New Accelerator Pump5. Could the float bowl actually be the problem? Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Adjust by bending throttle connector rod at upper angle (B). Most of the single step rods were steel. One of the butterflies is open about 1/8 with the carburetor dis assembled. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Blow through the intake check passage to be sure the passage is open. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Product information . 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. cm448. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. The single step rods were used on some of the price leader carburetors (i.e. Check the low speed jets to make sure they are clear (#44). 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. 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. 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 The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. Carter WCFB Rebuild kits: Rebuild Kits. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Gasket between bowl and base is installed backwards (easy to do). 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. Examine the viton tip for any marks.Fuel pump pressure could be too high. (note) The metering rods will fit into the jets loosely. Carter WCFB Build Sheets This is an electronic rebuild manual, no physical copy will be provided. Low fuel pump pressure always check you motors manual for the correct pressure. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Note te larger box, and the number of additional tools from the 1935 set. The accelerator pump circuit resides on the primary side of this carburetor. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. One is in the secondary venturi and the other just above the throttle plate. 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. Adjust by bending unloader lip on throttle shaft lever. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). You cannot go wrong with Mikes carburetor in any way. 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? This eliminates any bog or hesitation when acceleration. Ultra-Sonic Cleaning3. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). I have repeated multiple times with same results. Is there a pointed check weight in the main discharge hole. The accelerator pump circuit resides on the primary side of. Can't find the answer you're looking for. On the WCFB the check ball is usually at the bottom of the pump well. This check prevents excessive pressure in the discharge passage during acceleration. 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 (. Carter WCFB, 4 barrel metering rod adjustment instructions. Back out throttle stop screw until throttle valves seat in bores. They are staked in the hole. Outside top of early Carter tool box with correct decal. Some models have a pump relief check in the bottom of the fuel bowl. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. The flat surface of the pump arm should be parallel to the straight edge. 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 Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. No metering rod gauges are necessary. You need to run wire down all small passages. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Put some fluid in theaccelerator pumpwell and press down on the pump. Other than that, great company to deal with. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. 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. Make sure manifold heat control valve is free. Quick test to see if the accelerator pump is working. Fig. 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). You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. A WGD usually has a pump arm like that of a WCFB (IIRC). Some have a coating to give it a better shelf life. Back off the idle screw so that the throttle plates close completely. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. 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. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. 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. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. Can't find the answer you're looking for? Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. They sometimes need trimming. Fig. The file is in PDF format, you can download and save/print a copy.
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