Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Can't find the answer you're looking for? 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 This eliminates any bog or hesitation when acceleration. Piston force is too much for linkage. Carter WCFB 4 Barrel Carburetor Float System. However, it is very similar and I found it very useful. Carter WCFB 4 Barrel Adjust Float. 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. Share. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. This is an electronic rebuild manual, no physical copy will be provided. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. *New Float6. Quick test to see if the accelerator pump is working. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. 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. See figure 9F-2. 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? cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. This is percolation. The adjustment of the pump is important in order to get the required fuel. 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. This box did not have a part number. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. 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. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. When removing valves they should be marked so that they get put back the same way. Carter WCFB 4 Barrel Carburetor Float System. Be sure these ports are clear. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. The fuel is also conducted through a passage in the air horn to the secondary needle seat. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. 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. Could the float bowl actually be the problem? Tyler's Forgotten Car Rescue 22,933 views. Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. Adjust by bending throttle connector rod at deepest angle as shown. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Use a brass drift punch. Disassembly2. Check the low speed jets to make sure they are clear (#44). Adjusting the WCFB float level and float drop. Make sure the air cleaner gasket does not block the bowl vents. I have repeated multiple times with same results. 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 . If not, then find the check ball and make sure it is loose. 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. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. *New Accelerator Pump5. You can also check the adjustment by measuring (F) which should be 18/64. 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. Make sure the ball rattles. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. Adjust by bending arm (J) on choke trip lever. One is in the secondary venturi and the other just above the throttle plate. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Adjust idle screws D to produce a smooth idle of correct speed is obtained. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Clogged idle tube, or passages in the idle circuit. 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. 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 . Check any vents to make sure they are open. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! The download link will expire in 30 days. This check prevents excessive pressure in the discharge passage during acceleration. Back off the idle screw so that the throttle plates close completely. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Carter WCFB Rebuild kits: Rebuild Kits. The most complete document I have found. Good quality print. Can you help me out? Float drop not set, or fuel pump pressure too low. Install the pump connector rod (D) in the outer hole, long stroke. 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). Seat the discharge check by tapping lightly in the hole to form a good seal. b. They sometimes need trimming. Can't find the answer you're looking for? A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. During high speed operation a vacuum exists at the pump jets. Seat the intake 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. cm448. 3: Holley 4150 idle mixture and speed adjustment screws. Do not depress float lip against spring in needle, but let float rest of its own weight. Ultra-Sonic Cleaning3. 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. They are not meant to fill the hole, only to restrict it. Is there a pointed check weight in the main discharge hole. Gasket removed. Hold air horn upside down with floats in place and gasket removed. 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. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. With carburetor installed and engine warmed up. Do not depress float lip against spring in needle, but let float rest of its own weight. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Put a straight edge across the dust cover as illustrated. This allows air instead of fuel to be drawn off the pump jets. 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). It's highlighted yellow and will look something like this. Disassembly2. Secondarys are somehow stuck open (which amounts to a vacuum leak). Your friend will receive an email from you with a link to our site. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Refer to the Adjustment Data Table for adjustment dimensions. 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 The accelerator pump circuit resides on the primary side of this carburetor. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Coat threads of screw with sealing compound and install it. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Two ports act as calibrated air bleeds. 1955 Pontiac - Loading or Carburetor Flooding Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Also make sure one isnt rubbing on the side. Note te larger box, and the number of additional tools from the 1935 set. Low fuel pump pressure always check you motors manual for the correct pressure. 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! We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. We will contact you as soon as this product is available. Adjust by bending float arms, making sure both pontoons on each float are the same height. Carter WCFB, 4 barrel metering rod adjustment instructions. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Pulloffs : CUFWCFB2 $ 0 . Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. 2: Carter AFB idle mixture and speed adjustment screws. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Probably not since only one butterfly is open. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. 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. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Take the top off and put the pump in the well all the way to the bottom. 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. 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. WCFB Carburetor Cutting Out on Left Hand Turn. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Can't find the answer you're looking for? Fast, secure e-book download. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Blowing out passages will not get them clean enough. 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. Adjust by bending the choke connector rod at lower angle (H). 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. 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. 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. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 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. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . 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. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Each size must be used in its own location. 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. The accelerator pump circuit resides on the primary side of. 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. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn 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. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Test the floats in hot water and if you get any bubbles then they are leaking. 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 Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. No metering rod gauges are necessary. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). Back out throttle stop screw until throttle valves seat in bores. If hard starting still exists change the choke setting to one point lean. Hold in place and carefully tighten metering rod arm set screw (G). Check throttle linkage to make sure that primary throttle valves come to full wide open position. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. 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. They know their stuff and provide technical assistance and guides in both paper and video formats. Test the needle by holding it down gently with a brass drift punch. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Air Bled has the venturi tube pointing down into the bore. 1st check to make sure the fast idle linkage isnt holding the valves open. Ultra-Sonic Cleaning3. 1955 Chevy Hard starting after flooding. Can't find the answer you're looking for? 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 Recheck unloader settings with carburetor on the engine. Back out throttle screw so that the throttle valve close completly. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). 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. Watch on. Did the old gasket get removed? 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. The fuel is also conducted through a passage in the air horn to the secondary needle seat. The setups data is the same. Must be made after fast idle adjustment. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. parts. The discharge check is seated at this time to prevent air being drawn into the pump well. With throttle valves seated in bores, dust cover and gasket in place. In this video I show you how to replace the fast idle spring on the WCFB carburetor. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. You cannot go wrong with Mikes carburetor in any way. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. The well should fill with fluid. Can't find the answer you're looking 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 Run a blunt object around the inside of the leather cup to make sure any coating is broken. What more could you ask for? Product information . This restricts the flow of fuel. Someone has installed it improperly. Watch this. Measure from toe B to air horn. Gasket removed as shown A. 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. (note) The metering rods will fit into the jets loosely. As for the pump not squirting.I suspect the pump well isnt filling up. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. 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. You may even have to resort to finding a used WCFB carburetor. When closing the throttle, the accelerator moves up in the pump well. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Carter WCFB, 4 barrel carburetor manual. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. Carburetors equipped with an adjustable bowl vent require adjustment. 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 that is the case, I bend the accel. Hold air horn upright with floats hanging. Please complete the fields below to send your friend a link to this product. The ends of the connector rod should point to the throttle arm side. This can be done by looking at the impression on bowl cover gasket. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. To correct, remove carburetor and turn it upside down. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Place the choke housing toward the left and remove upper right main body to throttle body screw. Make sure manifold heat control valve is free. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. WCFB carburetors, althqugh basically all units are allke. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Make sure the pontoons are centered and will not rub the bowl sides. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Add a couple drops of oil to the leather. Outside top of early Carter tool box with correct decal. BBS) and were basically an on/off condition similar to the function of a power valve. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Probably around 4- 4.5lbs. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Adjust by bending unloader lip on throttle shaft lever. Press down on vacuum piston link C until metering rods bottom in the carburetor body. Fig. Everyone Has Started an Engine in the . The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Fig. Make sure the pump relief check is clean. 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. Back out throttle lever set screw until throttle valves seat in bores of carburetor. Test the fuel pump to be sure it isnt putting out too much pressure. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. Carter WCFB 4 Barrel Carburetor Float System. The metering rod adjustment should be done after the pump adjustment. 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. Blow through the intake check passage to be sure the passage is open. The piston is brass and can be damaged very easily. Carter WCFB Fast Idle With carburetor installed and engine warmed up. *New Airhorn Gasket7. It should not be opened up. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. Ethanol gas does not have much if any lubrication. 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. 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. Adjust by bending lip of float, not float arm. a. Notice holes from which linkage rods are removed so they can Adjust by bending the connector rod at the lower bend (E). . I. DISASSEMBLY. 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
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