This check prevents excessive pressure in the discharge passage during acceleration. William C. Carter was born in Union City Tennessee in 1884. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Can't find the answer you're looking for? There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Install the pump connector rod (D) in the outer hole, long stroke. Carter WCFB 4 Barrel Carburetor Float System. 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). The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. The carburetor will flood. When I slow down to an idle, my engine runs rough. *New Accelerator Pump5. 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. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Change the choke setting to index. 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. 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. Free shipping for many products! Test the fuel pump to be sure it isnt putting out too much pressure. WCFB carburetors, althqugh basically all units are allke. 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 (. When closing the throttle, the accelerator moves up in the pump well. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. Aspringis inserted in the power piston hole, then the piston. They are not meant to fill the hole, only to restrict it. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. The most complete document I have found. To correct, remove carburetor and turn it upside down. This eliminates any bog or hesitation when acceleration. Hold a straight edge across top of dust cover housing, next to the pump arm. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Hold air horn upright with floats hanging. Adjust by bending lip of float, not float arm. 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. Carter WCFB Rebuild kits: Rebuild Kits. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. 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. Carter WCFB, 4 barrel carburetor manual. 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. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn New fuel pumps are especially suspect. Air Bled has the venturi tube pointing down into the bore. Hold in place and carefully tighten metering rod arm set screw (G). As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Fig. I have repeated multiple times with same results. 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. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. 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 . You can also check the adjustment by measuring (F) which should be 18/64. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. a. *New Float6. Can't find the answer you're looking for? Use a brass drift punch. 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. Test the needle by holding it down gently with a brass drift punch. Measure float height as illustrated above. The accelerator pump circuit resides on the primary side of this carburetor. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. The flat surface of the pump arm should be parallel to the straight edge. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. When removing valves they should be marked so that they get put back the same way. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Ideas?? 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 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Ultra-Sonic Cleaning3. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. 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. 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. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. *New Main Body Gasket8. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? 1st check to make sure the fast idle linkage isnt holding the valves open. Make sure there is a check needle below the main discharge. This is percolation. 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). but if it runs well you don't really need to make any adjustments. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. One caveatits my impression that the float bowl is full because when I disconnect the fuel supply line from fuel pump (to card), it has pressure on the line. If not then clean it and try again. 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. It needs about 4 lbs of pressure. Back out throttle screw so that the throttle valve close completly. 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! Older kits 30-70s. 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. Some have a coating to give it a better shelf life. Adjust by bending float arms, making sure both pontoons on each float are the same height. Please complete the fields below to send your friend a link to this product. When replacing them hold them tight against the wall while tightening the screw. Make sure manifold heat control valve is free. The metering rod adjustment should be done after the pump adjustment. All late model WCFB carburetors have three different length bowl cover screws. You should feel some pressure and fluid should not be bypassing the check needle. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. During high speed operation a vacuum exists at the pump jets. Adjust by bending the connector rod at the lower bend (E). Loosen the clamp screw A Press. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Tyler's Forgotten Car Rescue 22,933 views. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. 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. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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 Build Sheets Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. 60 pages of great info. 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. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Float drop not set, or fuel pump pressure too low. The file is in PDF format, you can download and save/print a copy. It's highlighted yellow and will look something like this. 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 Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Pulloffs : CUFWCFB2 $ 0 . It should not be opened up. 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 fuel is also conducted through a passage in the air horn to the secondary needle seat. Your friend will receive an email from you with a link to our site. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Watch this. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. 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 . Examine the viton tip for any marks.Fuel pump pressure could be too high. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. If not, then find the check ball and make sure it is loose. Must be made after fast idle adjustment. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. 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 Ultra-Sonic Cleaning3. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Outside top of early Carter tool box with correct decal. 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 cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Both valves should be closed. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Check throttle linkage to make sure that primary throttle valves come to full wide open position. The setups data is the same. 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.
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