. Put some fluid in theaccelerator pumpwell and press down on the pump. *New Accelerator Pump5. The ends of the connector rod should point to the throttle arm side. Carter WCFB Fast Idle With carburetor installed and engine warmed up. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? 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. It needs about 4 lbs of pressure. Make sure the air horn contacts the inner wall of the bowl. cm448. 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 Recheck unloader settings with carburetor on the engine. 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 is percolation. Can't find the answer you're looking for. Can't find the answer you're looking for? However, it is very similar and I found it very useful. I have repeated multiple times with same results. Correct by removing any burrs or nicks. *New Float6. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. 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 allows air instead of fuel to be drawn off the pump jets. 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. Hold air horn upright with floats hanging. You can also check the adjustment by measuring (F) which should be 18/64. WCFB carburetors, althqugh basically all units are allke. Test the floats in hot water and if you get any bubbles then they are leaking. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Hold air horn upside down with floats in place and gasket removed. Check the low speed jets to make sure they are clear (#44). They are staked in the hole. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. No metering rod gauges are necessary. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Make sure the air cleaner gasket does not block the bowl vents. The flat surface of the pump arm should be parallel to the straight edge. Carter WCFB 4 Barrel Carburetor Float System. On 1956 models one point rich. Most of the single step rods were steel. The file is in PDF format, you can download and save/print a copy. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Adjust by bending unloader lip on throttle shaft lever. Make sure manifold heat control valve is free. Check throttle linkage to make sure that primary throttle valves come to full wide open position. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. 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). 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. Use a brass drift punch. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. If hard starting still exists change the choke setting to one point lean. 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. It's highlighted yellow and will look something like this. Change the choke setting to index. 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. It should not be opened up. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. Both valves should be closed. Tyler's Forgotten Car Rescue 22,933 views. The correct way is to use a fuel pump pressure gauge. The most complete document I have found. The accelerator pump circuit resides on the primary side of this carburetor. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Put a straight edge across the dust cover as illustrated. Any pressure put on the needle will damage it. Fig. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. 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 . *New Airhorn Gasket7. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Take the top off and put the pump in the well all the way to the bottom. Place the choke housing toward the left and remove upper right main body to throttle body screw. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Hold a straight edge across top of dust cover housing, next to the pump arm. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. The download link will expire in 30 days. Can't find the answer you're looking for? You may even have to resort to finding a used WCFB carburetor. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Measure from center top surface of pontoons to air horn. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. The setups data is the same. Technical Details. Can't find the answer you're looking for? 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 You need to run wire down all small passages. Seat the discharge check by tapping lightly in the hole to form a good seal. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. In this video I show you how to replace the fast idle spring on the WCFB carburetor. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. William C. Carter was born in Union City Tennessee in 1884. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Did the old gasket get removed? The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Probably not since only one butterfly is open. Product information . 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. What more could you ask for? 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 When that is the case, I bend the accel. 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. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. b. Ethanol leaves deposits behind that acts like corrosion. 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. When closing the throttle, the accelerator moves up in the pump well. Add a couple drops of oil to the leather. They are not meant to fill the hole, only to restrict it. The piston is brass and can be damaged very easily. Some models have a pump relief check in the bottom of the fuel bowl. Coat threads of screw with sealing compound and install it. Low fuel pump pressure always check you motors manual for the correct pressure. Is there a pointed check weight in the main discharge hole. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). Gasket removed. 5:04. a. Each size must be used in its own location. 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. Sometimes scraping around the edges with an awl will remove the staking. Adjust by bending throttle connector rod at deepest angle as shown. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Carter WCFB Carburetor E-Manual Download eWCFB, The file is in PDF format, you can download and save/print a copy, FREE to our customers that buy a rebuild kit. If not, then find the check ball and make sure it is loose. Ethanol gas does not have much if any lubrication. Carter WCFB Rebuild kits: Rebuild Kits. New fuel pumps are especially suspect. 1955 Chevy Hard starting after flooding. 2: Carter AFB idle mixture and speed adjustment screws. 1st check to make sure the fast idle linkage isnt holding the valves open. 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. Everyone Has Started an Engine in the . The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. The Carter AFB uses weights, and therefore never goes out of adjustment. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. Carter WCFB 4 Barrel Carburetor Float System. 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. Can you help me out? Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Someone has installed it improperly. To correct, remove carburetor and turn it upside down. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Rotate throttle stop screw E until engine idle at approx 500 RPM. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Ultra-Sonic Cleaning3. Adjust by bending throttle connector rod at upper angle (B). One of the butterflies is open about 1/8 with the carburetor dis assembled. Quick test to see if the accelerator pump is working. Float drop not set, or fuel pump pressure too low. The WCFB carburetor which came on some of the earliest 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 built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . We will contact you as soon as this product is available. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Then close throttle. This check prevents excessive pressure in the discharge passage during acceleration. This can be done by looking at the impression on bowl cover gasket. This is an electronic rebuild manual, no physical copy will be provided. Must be made after fast idle adjustment. Measure float height as illustrated above. Pulloffs : CUFWCFB2 $ 0 . Back out throttle lever set screw until throttle valves seat in bores of carburetor. Fast, secure e-book download. 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 float level and float drop. 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. Watch on. They work fine when I push hard down on the piston. Make sure there is a check needle below the main discharge. Seat the intake check by tapping lightly in the hole to form a good seal. The flat on top of the pump arm should be parallel to the straight edge. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. To prevent fuel from being drawn through the pump circuit, the passage to the pump jets is vented by a cross passage to the carburetor bowl above the fuel level. Note te larger box, and the number of additional tools from the 1935 set. Outside top of early Carter tool box with correct decal. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Blow through the intake check passage to be sure the passage is open. With mineral spirits in the float bowl, Raise the pump. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. Install the pump connector rod (D) in the outer hole, long stroke. 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. 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. Adjust by bending float arms, making sure both pontoons on each float are the same height. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Could the float bowl actually be the problem? I. DISASSEMBLY. Do not depress float lip against spring in needle, but let float rest of its own weight. Can't find the answer you're looking for? Back out throttle screw so that the throttle valve close completly. Be sure these ports are clear. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Install the pump connector rod (D) in the outer hole, long stroke. 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. Older kits 30-70s. The ends of the connector rod should point to the throttle arm side. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Eckler's Premier Quality Products 57132129 Chevy Carburetor Rebuild Kit Carter WCFB Replacement Kit Includes All Gaskets, Seals, Check Balls, Springs, Accelerator Pump & Needle Valve Read more CARTER 4 Barrel WCFB DUAL CARBURETOR KITS & FUEL FILTERS 1961-65 CHEVROLET 1955-56 DESOTO April 18, 2018 Carter Carburetors Rebuild Kits *New Main Body Gasket8. If not then clean it and try again. Carter WCFB, 4 barrel carburetor manual. Make sure the pump relief check is clean. This restricts the flow of fuel. 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 (. 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 This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Test the needle by holding it down gently with a brass drift punch. With carburetor installed and engine warmed up. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Place the choke housing toward the left and remove upper right main body to throttle body screw. Hold throttle valve wide open and close choke valve as far as possible without forcing. Hold in place and carefully tighten metering rod arm set screw (G). 57-65 WCFB 1 x 4 carb - Cover only no spring or spring plate CUD3741 $ 4.99 Gasket - Base WCFB 4GC G402 $ 4.95 Flange Gasket G1164 $ 4.95 WCFB Air Cleaner Gasket . With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Back off the idle screw so that the throttle plates close completely. Disassembly2. Your friend will receive an email from you with a link to our site. Measure from toe B to air horn. Make sure the ball rattles. FREE to our customers that buy a rebuild kit. Gasket between bowl and base is installed backwards (easy to do). 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