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Make sure manifold heat control valve is free. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. 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. Adjust by bending the connector rod at the lower bend (E). Fig. 1955 Chevy Hard starting after flooding. Air Bled has the venturi tube pointing down into the bore. 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 . Free shipping for many products! Put some fluid in theaccelerator pumpwell and press down on the pump. The piston is brass and can be damaged very easily. Use a brass drift punch. Adjust by bending throttle connector rod at deepest angle as shown. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. 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 flat surface of the pump arm should be parallel to the straight edge. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Place the choke housing toward the left and remove upper right main body to throttle body screw. Also make sure one isnt rubbing on the side. To correct, remove carburetor and turn it upside down. Do not depress float lip against spring in needle, but let float rest of its own weight. See figure 9F-2. 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. 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 all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. 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 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 Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Measure float height as illustrated above. Measure from center top surface of pontoons to air horn. Note te larger box, and the number of additional tools from the 1935 set. Other than that, great company to deal with. This is an electronic rebuild manual, no physical copy will be provided. Blowing out passages will not get them clean enough. Adjust by bending float arms, making sure both pontoons on each float are the same height. Could the float bowl actually be the problem? Can't find the answer you're looking for? Carter WCFB, 4 barrel metering rod adjustment instructions. 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. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. 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. 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. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Disassembly2. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Both valves should be closed. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Please complete the fields below to send your friend a link to this product. The flat on top of the pump arm should be parallel to the straight edge. You may even have to resort to finding a used WCFB carburetor. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Adjust by bending throttle connector rod at upper angle (B). Gasket removed. Be careful removing the intake check retainer. Metering rods for the WCFB have been out of production for several years now. 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. The adjustment of the pump is important in order to get the required fuel. 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. *New Main Body Gasket8. Some models have a pump relief check in the bottom of the fuel bowl. Hold throttle valve wide open and close choke valve as far as possible without forcing. 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. Carburetors equipped with an adjustable bowl vent require adjustment. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Can't find the answer you're looking for? Back off the idle screw so that the throttle plates close completely. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. 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. Seat the intake check by tapping lightly in the hole to form a good seal. Disassembly2. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. 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 not, then find the check ball and make sure it is loose. You should feel some pressure and fluid should not be bypassing the check needle. Adjust by bending arm (J) on choke trip lever. Quick test to see if the accelerator pump is working. Two ports act as calibrated air bleeds. 3: Holley 4150 idle mixture and speed adjustment screws. We will contact you as soon as this product is available. Notice holes from which linkage rods are removed so they can Is there a pointed check weight in the main discharge hole. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. They sometimes need trimming. However, it is very similar and I found it very useful. Share. Someone has installed it improperly. You are flooding (getting too much gas in the float bowl), caused by these types of problems. If hard starting still exists change the choke setting to one point lean. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. The ends of the connector rod should point to the throttle arm side. The Carter AFB uses weights, and therefore never goes out of adjustment. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. On the WCFB the check ball is usually at the bottom of the pump well. It needs about 4 lbs of pressure. 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. Take the top off and put the pump in the well all the way to the bottom. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. 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! Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. WCFB Carburetor Cutting Out on Left Hand Turn. Seat the discharge check by tapping lightly in the hole to form a good seal. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. No metering rod gauges are necessary. Recheck unloader settings with carburetor on the engine. 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 When removing valves they should be marked so that they get put back the same way. Tyler's Forgotten Car Rescue 22,933 views. Any pressure put on the needle will damage it. Solid fuel has the 2 tubes pointing up. WCFB carburetors, althqugh basically all units are allke. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. 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? Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Can't find the answer you're looking for? On 1956 models one point rich. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Most of the single step rods were steel. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. 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. Recheck float adjustments. Older kits 30-70s. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. 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 Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Adjust by bending lip of float, not float arm. To correct, remove carburetor and turn it upside down. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. Then close throttle. Ideas?? I have repeated multiple times with same results. They are not meant to fill the hole, only to restrict it. 1955 Pontiac - Loading or Carburetor Flooding Enter Carb Number. New fuel pumps are especially suspect. Examine the viton tip for any marks.Fuel pump pressure could be too high. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. When I slow down to an idle, my engine runs rough. With throttle valves seated in bores, dust cover and gasket in place. 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. 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). b. Some have a coating to give it a better shelf life. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Everyone Has Started an Engine in the . Carter WCFB 4 Barrel Adjust Float. 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. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Make sure the pontoons are centered and will not rub the bowl sides. Clogged idle tube, or passages in the idle circuit. When done you should see very little daylight around the valve. The setups data is the same. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. 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). Piston force is too much for linkage. Blow through the intake check passage to be sure the passage is open. This check prevents excessive pressure in the discharge passage during acceleration. Carter WCFB, 4 barrel carburetor manual. 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. (note) The metering rods will fit into the jets loosely. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Change the choke setting to index. Adjust idle screws D to produce a smooth idle of correct speed is obtained. You cannot go wrong with Mikes carburetor in any way. This box did not have a part number. 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. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. They are staked in the hole. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. 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. Hold in place and carefully tighten metering rod arm set screw (G). Back out throttle stop screw until throttle valves seat in bores. The correct way is to use a fuel pump pressure gauge. Make sure the air cleaner gasket does not block the bowl vents. *New Accelerator Pump5. Ethanol gas does not have much if any lubrication. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. Secondarys are somehow stuck open (which amounts to a vacuum leak). Carter WCFB Fast Idle With carburetor installed and engine warmed up. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. 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 These diagrams include: Fig. Loosen the clamp screw A Press. A WGD usually has a pump arm like that of a WCFB (IIRC). Carter used metering rods with a single step, 2-step, 3-step, and 4-step. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. The ends of the connector rod should point to the throttle arm side. When that is the case, I bend the accel. Measure from toe B to air horn. Ultra-Sonic Cleaning3. 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 Adjust by bending unloader lip on throttle shaft lever. Technical Details. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. 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. You can also check the adjustment by measuring (F) which should be 18/64. 1: Carter WCFB idle mixture and speed adustment screw location. 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. Carter WCFB Rebuild kits: Rebuild Kits. Good quality print. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. 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. 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. All These Part Numbers Interchange Into Our Part No. 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. Test the needle by holding it down gently with a brass drift punch. The WCFB carburetor which came on some of the earliest The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. Put a straight edge across the dust cover as illustrated. 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. Carter WCFB 4 Barrel Carburetor Float System. Press down on vacuum piston link C until metering rods bottom in the carburetor body. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Adjust by bending the choke connector rod at lower angle (H). Carter WCFB 4 Barrel Carburetor Float System. 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. During high speed operation a vacuum exists at the pump jets. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 60 pages of great info. What Has Been Done to This Carburetor?1. Can't find the answer you're looking for? Install the pump connector rod (D) in the outer hole, long stroke. 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 . cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Coat threads of screw with sealing compound and install it. 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. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. 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 accelerator pump circuit resides on the primary side of. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Check any vents to make sure they are open. The single step rods were used on some of the price leader carburetors (i.e. Each size must be used in its own location. Probably around 4- 4.5lbs. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 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. Fig. The file is in PDF format, you can download and save/print a copy. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. 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. Test the floats in hot water and if you get any bubbles then they are leaking. 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 most complete document I have found. William C. Carter was born in Union City Tennessee in 1884. Carter WCFB Build Sheets 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. 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. Watch on. Carter WCFB 4 Barrel Carburetor Float System. Outside top of early Carter tool box with correct decal. 5:04. You need to run wire down all small passages. 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. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. With mineral spirits in the float bowl, Raise the pump. With carburetor installed and engine warmed up. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. The discharge check is seated at this time to prevent air being drawn into the pump well. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned.