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. BBS) and were basically an on/off condition similar to the function of a power valve. 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. Please complete the fields below to send your friend a link to this product. The setups data is the same. Can't find the answer you're looking for? Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Then close throttle. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Change the choke setting to index. If not then clean it and try again. Adjust by bending the connector rod at the lower bend (E). Do not depress float lip against spring in needle, but let float rest of its own weight. 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. Rochester and Carter replacement parts are interchangeable. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. The fuel is also conducted through a passage in the air horn to the secondary needle seat. They work fine when I push hard down on the piston. Watch on. Make sure the ball rattles. 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. 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. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Carter WCFB 4 Barrel Carburetor Float System. Can't find the answer you're looking for? The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Ethanol gas does not have much if any lubrication. No metering rod gauges are necessary. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. b. Rotate throttle stop screw E until engine idle at approx 500 RPM. Use a brass drift punch. You cannot go wrong with Mikes carburetor in any way. Any bubbles indicates a leak.Make sure the 2 floats are the same height. This box did not have a part number. Carter WCFB 4 Barrel Carburetor Float System. Put some fluid in theaccelerator pumpwell and press down on the pump. However, it is very similar and I found it very useful. Install the pump connector rod (D) in the outer hole, long stroke. 1955 Pontiac - Loading or Carburetor Flooding Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . We will contact you as soon as this product is available. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Recheck float adjustments. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. *New Float6. This restricts the flow of fuel. You can also check the adjustment by measuring (F) which should be 18/64. Adjust by bending unloader lip on throttle shaft lever. Carter WCFB Rebuild kits: Rebuild Kits. The carburetor will flood. This check prevents excessive pressure in the discharge passage during acceleration. 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). On 1956 models one point rich. Carter WCFB, 4 barrel metering rod adjustment instructions. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. 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. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Any pressure put on the needle will damage it. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. 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. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. 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. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. With carburetor installed and engine warmed up. Clogged idle tube, or passages in the idle circuit. Make sure these are clear if you have percolation problems. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. 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. Back out throttle screw so that the throttle valve close completly. Product information . Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Carter WCFB 4 Barrel Adjust Float. Hold throttle valve wide open and close choke valve as far as possible without forcing. Is there a pointed check weight in the main discharge hole. This can be done by looking at the impression on bowl cover gasket. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. Anti-Rust "Dichromate" Finish**4. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Each size must be used in its own location. Your friend will receive an email from you with a link to our site. The metering rod adjustment should be done after the pump adjustment. 1955 Chevy Hard starting after flooding. These diagrams include: Fig. Blow through the intake check passage to be sure the passage is open. 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 . Hold a straight edge across top of dust cover housing, next to the pump arm. Seat the intake check by tapping lightly in the hole to form a good seal. To correct, remove carburetor and turn it upside down. The Carter AFB uses weights, and therefore never goes out of adjustment. The flat on top of the pump arm should be parallel to the straight edge. All late model WCFB carburetors have three different length bowl cover screws. parts. The ends of the connector rod should point to the throttle arm side. With throttle valves seated in bores, dust cover and gasket in place. Adjust idle screws D to produce a smooth idle of correct speed is obtained. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. If a loss of rpm is noted, or if the engine dies, and air leak exists. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. 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 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. On the WCFB the check ball is usually at the bottom of the pump well. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. but if it runs well you don't really need to make any adjustments. They know their stuff and provide technical assistance and guides in both paper and video formats. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Outside top of early Carter tool box with correct decal. Coat threads of screw with sealing compound and install it. Make sure manifold heat control valve is free. This is an electronic rebuild manual, no physical copy will be provided. 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 You may even have to resort to finding a used WCFB carburetor. The most complete document I have found. Test the floats in hot water and if you get any bubbles then they are leaking. One is in the secondary venturi and the other just above the throttle plate. Metering rods for the WCFB have been out of production for several years now. What Has Been Done to This Carburetor?1. 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. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. This is an electronic rebuild manual, no physical copy will be provided. When replacing them hold them tight against the wall while tightening the screw. 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. 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. 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. Everyone Has Started an Engine in the . Ideas?? 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. I. DISASSEMBLY. 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. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Can't find the answer you're looking for? The accelerator pump circuit resides on the primary side of this carburetor. The adjustment of the pump is important in order to get the required fuel. Measure from toe B to air horn. 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 Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Tyler's Forgotten Car Rescue 22,933 views. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. Solid fuel has the 2 tubes pointing up. See figure 9F-2. The ends of the connector rod should point to the throttle arm side. Check throttle linkage to make sure that primary throttle valves come to full wide open position. The adjustment of the pump is important in order to get the required fuel. Rotate throttle stop screw E until engine idle at approx 500 RPM. Back out throttle stop screw until throttle valves seat in bores. The download link will expire in 30 days. Float drop not set, or fuel pump pressure too low. cm448. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Two ports act as calibrated air bleeds. Adjust by bending arm (J) on choke trip lever. Notice holes from which linkage rods are removed so they can Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. What more could you ask for? 1st check to make sure the fast idle linkage isnt holding the valves open. New fuel pumps are especially suspect. Someone has installed it improperly. Can't find the answer you're looking for? One of the butterflies is open about 1/8 with the carburetor dis assembled. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. 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. If hard starting still exists change the choke setting to one point lean. Carter WCFB, 4 barrel carburetor manual. 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 WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. The accelerator pump circuit resides on the primary side of. Probably around 4- 4.5lbs. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Some models have a pump relief check in the bottom of the fuel bowl. It needs about 4 lbs of pressure. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Can you help me out? In this video I show you how to replace the fast idle spring on the WCFB carburetor. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Make sure the pump relief check is clean. 2: Carter AFB idle mixture and speed adjustment screws. Gasket removed as shown A. Make sure the air horn contacts the inner wall of the bowl. FREE to our customers that buy a rebuild kit. This is percolation. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Gasket between bowl and base is installed backwards (easy to do). This restricts the flow of fuel. Note te larger box, and the number of additional tools from the 1935 set. Carter WCFB 4 Barrel Carburetor Float System. You are flooding (getting too much gas in the float bowl), caused by these types of problems. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Low fuel pump pressure always check you motors manual for the correct pressure. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Adjust by bending float arms, making sure both pontoons on each float are the same height. Do not depress float lip against spring in needle, but let float rest of its own weight. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. Secondarys are somehow stuck open (which amounts to a vacuum leak). Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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. It's highlighted yellow and will look something like this. 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! Put a straight edge across the dust cover as illustrated. Run a blunt object around the inside of the leather cup to make sure any coating is broken. 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. The well should fill with fluid. 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. Did the old gasket get removed? Carter WCFB Build Sheets 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). WCFB carburetors, althqugh basically all units are allke. 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. 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). During high speed operation a vacuum exists at the pump jets. 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. 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 . Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. When closing the throttle, the accelerator moves up in the pump well. Fast, secure e-book download. 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 Make sure the air cleaner gasket does not block the bowl vents. Free shipping for many products! To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Check the low speed jets to make sure they are clear (#44). *New Accelerator Pump5. 60 pages of great info. 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). Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. Older kits 30-70s. Carter WCFB 4 Barrel Carburetor Float System. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). The WCFB carburetor which came on some of the earliest Make sure there is a check needle below the main discharge. 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. There should be a retainer keeping the check ball in place. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Share. It should not be opened up. Carburetors equipped with an adjustable bowl vent require adjustment. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. DO NOT apply any pressure on the needle. If not, then find the check ball and make sure it is loose. 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. Add a couple drops of oil to the leather. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Other than that, great company to deal with. 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. 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 Must be made after fast idle adjustment. Measure from center top surface of pontoons to air horn. 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? Blowing out passages will not get them clean enough. The piston is brass and can be damaged very easily. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. 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. Adjusting the WCFB float level and float drop. . We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Test the needle by holding it down gently with a brass drift punch. 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

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