I have repeated multiple times with same results. Make sure manifold heat control valve is free. Press down on vacuum piston link C until metering rods bottom in the carburetor body. New fuel pumps are especially suspect. Check the low speed jets to make sure they are clear (#44). This allows air instead of fuel to be drawn off the pump jets. The mixture screw may be bent, or damaged. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. 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! The setups data is the same. Install the pump connector rod (D) in the outer hole, long stroke. Correct by removing any burrs or nicks. Place the choke housing toward the left and remove upper right main body to throttle body screw. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. Could the float bowl actually be the problem? Carter WCFB 4 Barrel Carburetor Float System. Please complete the fields below to send your friend a link to this product. 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 adjustment of the pump is important in order to get the required fuel. Watch on. 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. 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. Check any vents to make sure they are open. Float drop not set, or fuel pump pressure too low. BBS) and were basically an on/off condition similar to the function of a power valve. The well should fill with fluid. Do not depress float lip against spring in needle, but let float rest of its own weight. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. 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. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. 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. 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. Hold air horn upside down with floats in place and gasket removed. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. 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. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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 WCFB Fast Idle With carburetor installed and engine warmed up. WCFB Carburetor Cutting Out on Left Hand Turn. Solid fuel has the 2 tubes pointing up. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. This check prevents excessive pressure in the discharge passage during acceleration. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Test the floats in hot water and if you get any bubbles then they are leaking. 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. Disassembly2. Probably around 4- 4.5lbs. Can't find the answer you're looking for? 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. I. DISASSEMBLY. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Your friend will receive an email from you with a link to our site. As for the pump not squirting.I suspect the pump well isnt filling up. Metering rods for the WCFB have been out of production for several years now. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Some have a coating to give it a better shelf life. Outside top of early Carter tool box with correct decal. Examine the viton tip for any marks.Fuel pump pressure could be too high. 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 . 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. Adjust by bending the connector rod at the lower bend (E). Everyone Has Started an Engine in the . Ideas?? Take the top off and put the pump in the well all the way to the bottom. The discharge check is seated at this time to prevent air being drawn into the pump well. 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. 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. All These Part Numbers Interchange Into Our Part No. The file is in PDF format, you can download and save/print a copy. 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. Add a couple drops of oil to the leather. 2: Carter AFB idle mixture and speed adjustment screws. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. Quick test to see if the accelerator pump is working. The carburetor will flood. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. This box did not have a part number. 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 Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Fig. They are not meant to fill the hole, only to restrict it. Air Bled has the venturi tube pointing down into the bore. This is an electronic rebuild manual, no physical copy will be provided. Coat threads of screw with sealing compound and install it. Recheck float adjustments. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. If not, then find the check ball and make sure it is loose. The adjustment of the pump is important in order to get the required fuel. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Adjust by bending arm (J) on choke trip lever. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Then close throttle. What more could you ask for? The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Carter WCFB 4 Barrel Carburetor Float System. Secondarys are somehow stuck open (which amounts to a vacuum leak). Recheck unloader settings with carburetor on the engine. Must be made after fast idle adjustment. Technical Details. Piston force is too much for linkage. With carburetor installed and engine warmed up. Enter Carb Number. Make sure these are clear if you have percolation problems. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Two ports act as calibrated air bleeds. Hold in place and carefully tighten metering rod arm set screw (G). Run a blunt object around the inside of the leather cup to make sure any coating is broken. parts. Be sure these ports are clear. Free shipping for many products! Adjust by bending throttle connector rod at upper angle (B). Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Older kits 30-70s. Fast, secure e-book download. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. 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. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Test the fuel pump to be sure it isnt putting out too much pressure. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). 60 pages of great info. The flat on top of the pump arm should be parallel to the straight edge. To correct, remove carburetor and turn it upside down. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Can't find the answer you're looking for? Hold a straight edge across top of dust cover housing, next to the pump arm. 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. 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. 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. Carburetors equipped with an adjustable bowl vent require adjustment. What Has Been Done to This Carburetor?1. The ends of the connector rod should point to the throttle arm side. Blowing out passages will not get them clean enough. 5:04. 3: Holley 4150 idle mixture and speed adjustment screws. 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. No metering rod gauges are necessary. Note te larger box, and the number of additional tools from the 1935 set. 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. The fuel is also conducted through a passage in the air horn to the secondary needle seat. 1955 Chevy Hard starting after flooding. When replacing them hold them tight against the wall while tightening the screw. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Do not depress float lip against spring in needle, but let float rest of its own weight. 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). Anti-Rust "Dichromate" Finish**4. 1955 Pontiac - Loading or Carburetor Flooding Be careful removing the intake check retainer. This is an electronic rebuild manual, no physical copy will be provided. *New Airhorn Gasket7. To correct, remove carburetor and turn it upside down. Carter WCFB 4 Barrel Carburetor Float System. During high speed operation a vacuum exists at the pump jets. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. The WCFB carburetor which came on some of the earliest It needs about 4 lbs of pressure. They know their stuff and provide technical assistance and guides in both paper and video formats. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. The accelerator pump circuit resides on the primary side of this carburetor. See figure 9F-2. The flat surface of the pump arm should be parallel to the straight edge. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . but if it runs well you don't really need to make any adjustments. The metering rod adjustment should be done after the pump adjustment. Back off the idle screw so that the throttle plates close completely. The Carter AFB uses weights, and therefore never goes out of adjustment. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. Measure from center top surface of pontoons to air horn. They sometimes need trimming. Other than that, great company to deal with. Make sure the ball rattles. Some models have a pump relief check in the bottom of the fuel bowl. Adjusting the WCFB float level and float drop. Carter WCFB Rebuild kits: Rebuild Kits. 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. Gasket removed. Install the pump connector rod (D) in the outer hole, long stroke. With mineral spirits in the float bowl, Raise the pump. Carter WCFB 4 Barrel Carburetor Float System. On the WCFB the check ball is usually at the bottom of the pump well. Can't find the answer you're looking for? 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. *New Main Body Gasket8. If a loss of rpm is noted, or if the engine dies, and air leak exists. You can also check the adjustment by measuring (F) which should be 18/64. *New Float6. Also make sure one isnt rubbing on the side. This eliminates any bog or hesitation when acceleration. Tyler's Forgotten Car Rescue 22,933 views. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Back out throttle lever set screw until throttle valves seat in bores of carburetor. 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). 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). 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. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Blow through the intake check passage to be sure the passage is open. Rotate throttle stop screw E until engine idle at approx 500 RPM. The correct way is to use a fuel pump pressure gauge. Each size must be used in its own location. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. 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 Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. This is percolation. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 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. Seat the discharge check by tapping lightly in the hole to form a good seal. William C. Carter was born in Union City Tennessee in 1884. 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 accelerator pump circuit resides on the primary side of. Ethanol gas does not have much if any lubrication. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. 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. 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. If hard starting still exists change the choke setting to one point lean. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Make sure the pontoons are centered and will not rub the bowl sides. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. 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. Gasket between bowl and base is installed backwards (easy to do). Low fuel pump pressure always check you motors manual for the correct pressure. cm448. Ethanol leaves deposits behind that acts like corrosion. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. If not then clean it and try again. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. Good quality print. The piston is brass and can be damaged very easily. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Make sure the pump relief check is clean. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Ultra-Sonic Cleaning3. Loosen the clamp screw A Press. You cannot go wrong with Mikes carburetor in any way. 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. 1st check to make sure the fast idle linkage isnt holding the valves open. Coat threads of screw with sealing compound and install it. With throttle valves seated in bores, dust cover and gasket in place. Carter WCFB, 4 barrel metering rod adjustment instructions. When closing the throttle, the accelerator moves up in the pump well. One of the butterflies is open about 1/8 with the carburetor dis assembled. Make sure the air horn contacts the inner wall of the bowl. Watch this. However, it is very similar and I found it very useful. One is in the secondary venturi and the other just above the throttle plate. Can't find the answer you're looking for? It should not be opened up. There should be a retainer keeping the check ball in place. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Adjust by bending float arms, making sure both pontoons on each float are the same height. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Use a brass drift punch. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. The download link will expire in 30 days. A WGD usually has a pump arm like that of a WCFB (IIRC). Adjust by bending lip of float, not float arm. Can't find the answer you're looking for. 1: Carter WCFB idle mixture and speed adustment screw location. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. 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 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). Hold throttle valve wide open and close choke valve as far as possible without forcing. On 1956 models one point rich. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. The most complete document I have found. This can be done by looking at the impression on bowl cover gasket. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Aspringis inserted in the power piston hole, then the piston. Probably not since only one butterfly is open. You may even have to resort to finding a used WCFB carburetor. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Both valves should be closed. Clogged idle tube, or passages in the idle circuit. Change the choke setting to index. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. 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 fuel is also conducted through a passage in the air horn to the secondary needle seat. FREE to our customers that buy a rebuild kit. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. In this video I show you how to replace the fast idle spring on the WCFB carburetor. DO NOT apply any pressure on the needle. Notice holes from which linkage rods are removed so they can Someone has installed it improperly. Ultra-Sonic Cleaning3. Measure float height as illustrated above. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. 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. Product information . The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. 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.
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