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Adjust by bending the connector rod at the lower bend (E). The accelerator pump circuit resides on the primary side of. Use a brass drift punch. This restricts the flow of fuel. No metering rod gauges are necessary. Rochester and Carter replacement parts are interchangeable. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Quick test to see if the accelerator pump is working. 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 spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Solid fuel has the 2 tubes pointing up. Any pressure put on the needle will damage it. Air Bled has the venturi tube pointing down into the bore. 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. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. You should feel some pressure and fluid should not be bypassing the check needle. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. 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. Adjust by bending float arms, making sure both pontoons on each float are the same height. 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 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). The discharge check is seated at this time to prevent air being drawn into the pump well. As for the pump not squirting.I suspect the pump well isnt filling up. Hold a straight edge across top of dust cover housing, next to the pump arm. One of the butterflies is open about 1/8 with the carburetor dis assembled. The Carter AFB uses weights, and therefore never goes out of adjustment. Hold throttle valve wide open and close choke valve as far as possible without forcing. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. The flat surface of the pump arm should be parallel to the straight edge. Fast, secure e-book download. The adjustment of the pump is important in order to get the required fuel. They are not meant to fill the hole, only to restrict it. Sometimes scraping around the edges with an awl will remove the staking. 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. Could the float bowl actually be the problem? However, it is very similar and I found it very useful. 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! It needs about 4 lbs of pressure. Make sure the ball rattles. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. Disassembly2. Check any vents to make sure they are open. Both valves should be closed. To correct, remove carburetor and turn it upside down. Ethanol leaves deposits behind that acts like corrosion. 5:04. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. They sometimes need trimming. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. If not, then find the check ball and make sure it is loose. Some models have a pump relief check in the bottom of the fuel bowl. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. A WGD usually has a pump arm like that of a WCFB (IIRC). The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Also make sure one isnt rubbing on the side. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Aspringis inserted in the power piston hole, then the piston. Can't find the answer you're looking for? The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. 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. 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. Must be made after fast idle adjustment. What Has Been Done to This Carburetor?1. 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 A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Hold in place and carefully tighten metering rod arm set screw (G). Disassembly2. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. This check prevents excessive pressure in the discharge passage during acceleration. Did the old gasket get removed? Technical Details. Adjust by bending throttle connector rod at deepest angle as shown. Measure from toe B to air horn. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Anti-Rust "Dichromate" Finish**4. DO NOT apply any pressure on the needle. You may even have to resort to finding a used WCFB carburetor. William C. Carter was born in Union City Tennessee in 1884. With throttle valves seated in bores, dust cover and gasket in place. Float drop not set, or fuel pump pressure too low. 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. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. The ends of the connector rod should point to the throttle arm side. Adjust by bending the choke connector rod at lower angle (H). This box did not have a part number. Outside top of early Carter tool box with correct decal. When I slow down to an idle, my engine runs rough. Enter Carb Number. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Each size must be used in its own location. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. See figure 9F-2. 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. b. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Adjust by bending arm (J) on choke trip lever. There should be a retainer keeping the check ball in place. Carter WCFB, 4 barrel metering rod adjustment instructions. Adjust by bending lip of float, not float arm. 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. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. When done you should see very little daylight around the valve. Test the needle by holding it down gently with a brass drift punch. Hold air horn upright with floats hanging. 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 . Change the choke setting to index. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. I. DISASSEMBLY. 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? Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. 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). Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. All These Part Numbers Interchange Into Our Part No. 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 Good quality print. 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. 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. Measure from center top surface of pontoons to air horn. 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. All late model WCFB carburetors have three different length bowl cover screws. What more could you ask for? Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Place the choke housing toward the left and remove upper right main body to throttle body screw. Your friend will receive an email from you with a link to our site. It should not be opened up. If not then clean it and try again. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. *New Main Body Gasket8. Share. 2: Carter AFB idle mixture and speed adjustment screws. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. The best-selling product Click now to browse 1957 LINCOLN ACCELERATOR PUMP CARTER WCFB FLUORELASTOMER CUP ETHANOL RESITANTIS we ship worldwide cch-rc.com, C $45.04 Free shipping for many products Find many great new & used options and get the best deals for 1957 LINCOLN ACCELERATOR PUMP CARTER WCFB FLUORELASTOMER CUP ETHANOL RESITANTIS at the . You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. 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 (. Probably not since only one butterfly is open. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Any bubbles indicates a leak.Make sure the 2 floats are the same height. The well should fill with fluid. The metering rod adjustment should be done after the pump adjustment. 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 Ideas?? 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. The mixture screw may be bent, or damaged. 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. 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. Hold air horn upside down with floats in place and gasket removed. BBS) and were basically an on/off condition similar to the function of a power valve. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. This eliminates any bog or hesitation when acceleration. 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. 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. 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. Rotate throttle stop screw E until engine idle at approx 500 RPM. Probably around 4- 4.5lbs. The ends of the connector rod should point to the throttle arm side. 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. Someone has installed it improperly. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. They are staked in the hole. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Carter WCFB, 4 barrel carburetor manual. Recheck float adjustments. This restricts the flow of fuel. The piston is brass and can be damaged very easily. 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. Test the fuel pump to be sure it isnt putting out too much pressure. 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. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). This is an electronic rebuild manual, no physical copy will be provided. The accelerator pump circuit resides on the primary side of this carburetor. They work fine when I push hard down on the piston. Please complete the fields below to send your friend a link to this product. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Carter WCFB 4 Barrel Adjust Float. 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. Ethanol gas does not have much if any lubrication. 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. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . WCFB Carburetor Cutting Out on Left Hand Turn. Carter WCFB Fast Idle With carburetor installed and engine warmed up. . I have repeated multiple times with same results. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Recheck unloader settings with carburetor on the engine. Is there a pointed check weight in the main discharge hole. On the WCFB the check ball is usually at the bottom of the pump well. 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. New fuel pumps are especially suspect. You cannot go wrong with Mikes carburetor in any way. Ultra-Sonic Cleaning3. Do not depress float lip against spring in needle, but let float rest of its own weight. Carter WCFB 4 Barrel Carburetor Float System. Watch this. Test the floats in hot water and if you get any bubbles then they are leaking. Do not depress float lip against spring in needle, but let float rest of its own weight. 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. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. FREE to our customers that buy a rebuild kit. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. 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. 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. Secondarys are somehow stuck open (which amounts to a vacuum leak). Product information . The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Run a blunt object around the inside of the leather cup to make sure any coating is broken. 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. (note) The metering rods will fit into the jets loosely. This can be done by looking at the impression on bowl cover gasket. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Check the low speed jets to make sure they are clear (#44). Adjust by bending unloader lip on throttle shaft lever. If hard starting still exists change the choke setting to one point lean. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. 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 cm448. 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 Can't find the answer you're looking for. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Be sure these ports are clear. Notice holes from which linkage rods are removed so they can How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. 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. Ultra-Sonic Cleaning3. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. 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 download link can be found on your order confirmation email which you will receive as soon as you complete the order. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Be careful removing the intake check retainer. This is percolation. Adjust idle screws D to produce a smooth idle of correct speed is obtained. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Make sure the pump relief check is clean. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Put some fluid in theaccelerator pumpwell and press down on the pump. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Can't find the answer you're looking for? Can't find the answer you're looking for? Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. These diagrams include: Fig. Examine the viton tip for any marks.Fuel pump pressure could be too high. Two ports act as calibrated air bleeds. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Clogged idle tube, or passages in the idle circuit. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. Put a straight edge across the dust cover as illustrated. Adjusting the WCFB float level and float drop. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. 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.
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