Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Some have a coating to give it a better shelf life. Take the top off and put the pump in the well all the way to the bottom. 5:04. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. It's highlighted yellow and will look something like this. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Can't find the answer you're looking for? I. DISASSEMBLY. All These Part Numbers Interchange Into Our Part No. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Carter WCFB Carburetor Troubleshooting The download link can be found on your order confirmation email which you will receive as soon as you complete the order. When closing the throttle, the accelerator moves up in the pump well. Be sure these ports are clear. Watch on. Carter WCFB Specifications - Mikes Carburetor Parts Technical Details. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Free shipping for many products! Hold air horn upside down with floats in place and gasket removed. Carter WCFB Carburetor Manual - Mike's Carburetor Parts With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. Refer to the Adjustment Data Table for adjustment dimensions. No metering rod gauges are necessary. The flat surface of the pump arm should be parallel to the straight edge. One is in the secondary venturi and the other just above the throttle plate. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Could the float bowl actually be the problem? building a wcfb 2x4 setup | Hot Rod Forum 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. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. b. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. 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. This is percolation. Carburetors equipped with an adjustable bowl vent require adjustment. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Adjust by bending throttle connector rod at upper angle (B). Carter WCFB 4 Barrel Adjust Float. PDF Parts List Carter Carburetor Model Wcfb Also make sure one isnt rubbing on the side. The flat on top of the pump arm should be parallel to the straight edge. How Do You Look up Carter Carburetor ID Numbers Online? - Reference.com Install the pump connector rod (D) in the outer hole, long stroke. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. To correct, remove carburetor and turn it upside down. Carter WCFB, 4 barrel metering rod adjustment instructions. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. 1952 Carter WCFBsetting idle - Discussion Forums Fast, secure e-book download. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. 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 4 Barrel Accelerator Pump Circuit - YouTube Press down on vacuum piston link C until metering rods bottom in the carburetor body. 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. 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. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Both valves should be closed. You cannot go wrong with Mikes carburetor in any way. 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. Did the old gasket get removed? 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. Air Bled has the venturi tube pointing down into the bore. Make sure manifold heat control valve is free. One of the butterflies is open about 1/8 with the carburetor dis assembled. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Carter WCFB Metering Rods - YouTube How to Modify a Carter or Edelbrock Carburetor - Muscle Car DIY Can't find the answer you're looking for. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. To correct, remove carburetor and turn it upside down. If hard starting still exists change the choke setting to one point lean. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Hold in place and carefully tighten metering rod arm set screw (G). When I slow down to an idle, my engine runs rough. Check the low speed jets to make sure they are clear (#44). 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. 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. 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). Adjust by bending the choke connector rod at lower angle (H). GM Corvette 1963-1982 Idle Speed and Mixture Repair Guide There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Test the needle by holding it down gently with a brass drift punch. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Seat the intake check by tapping lightly in the hole to form a good seal. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. Note te larger box, and the number of additional tools from the 1935 set. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. THE CARBURETOR SHOP / WCFB and 4-GC floats Adjust by bending float arms, making sure both pontoons on each float are the same height. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Sometimes scraping around the edges with an awl will remove the staking. 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. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. Make sure the pump relief check is clean. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. Low fuel pump pressure always check you motors manual for the correct pressure. cm448. THE CARBURETOR SHOP / Troubleshooting 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 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. Secondarys are somehow stuck open (which amounts to a vacuum leak). Blow through the intake check passage to be sure the passage is open. Carter WCFB Technical - Carburetor Parts Enter Carb Number. Older kits 30-70s. 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. Carter WCFB 4 Barrel Carburetor Float System. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Solid fuel has the 2 tubes pointing up. 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 are flooding (getting too much gas in the float bowl), caused by these types of problems. Coat threads of screw with sealing compound and install it. 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. Ethanol gas does not have much if any lubrication. Share. Is there a pointed check weight in the main discharge hole. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 1955 Chevy Hard starting after flooding. However, it is very similar and I found it very useful. Rochester and Carter replacement parts are interchangeable. Everyone Has Started an Engine in the . Two ports act as calibrated air bleeds. Gasket between bowl and base is installed backwards (easy to do). 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. The metering rod adjustment should be done after the pump adjustment. This can be done by looking at the impression on bowl cover gasket. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Fig. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. 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. The well should fill with fluid. Someone has installed it improperly. Blowing out passages will not get them clean enough. 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. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. The download link will expire in 30 days. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 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). When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Adjust by bending the connector rod at the lower bend (E). Adjust by bending arm (J) on choke trip lever. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Can't find the answer you're looking for? Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Any pressure put on the needle will damage it. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. This restricts the flow of fuel. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. parts. Quick test to see if the accelerator pump is working. WCFB carburetors, althqugh basically all units are allke. 1: Carter WCFB idle mixture and speed adustment screw location. Carter WCFB 4 Barrel Carburetor Carter Metering Rod Technology - THE CARBURETOR SHOP 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. Most of the single step rods were steel. 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. *New Main Body Gasket8. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Carter WCFB, 4 barrel carburetor manual. All late model WCFB carburetors have three different length bowl cover screws. FREE to our customers that buy a rebuild kit. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Then close throttle. The file is in PDF format, you can download and save/print a copy. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. The most complete document I have found. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. 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. Place the choke housing toward the left and remove upper right main body to throttle body screw. Carter WGD Adjustments - Mikes Carburetor Parts 19591961 Chevrolet Carter WCFB Carburetor Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. They are not meant to fill the hole, only to restrict it. Can you help me out? 1955 Pontiac - Loading or Carburetor Flooding 1956-1957 Chevrolet Carter WCFB Carburetor At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Put some fluid in theaccelerator pumpwell and press down on the pump. 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 staked in the hole. Test the fuel pump to be sure it isnt putting out too much pressure. 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. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. It should not be opened up. Back off the idle screw so that the throttle plates close completely. 19571958 Plymouth Fury Carter WCFB Carburetor *Remanufactured | eBay The fuel is also conducted through a passage in the air horn to the secondary needle seat. Can't find the answer you're looking for? You should feel some pressure and fluid should not be bypassing the check needle. As for the pump not squirting.I suspect the pump well isnt filling 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 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. Home - Carburetor Manual Ebooks The WCFB carburetor which came on some of the earliest Back out throttle stop screw until throttle valves seat in bores. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. . Do not depress float lip against spring in needle, but let float rest of its own weight. This allows air instead of fuel to be drawn off the pump jets. 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. Your friend will receive an email from you with a link to our site. Tyler's Forgotten Car Rescue 22,933 views. When replacing them hold them tight against the wall while tightening the screw. Hold throttle valve wide open and close choke valve as far as possible without forcing. Other than that, great company to deal with. Recheck float adjustments. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. 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. 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. When done you should see very little daylight around the valve. 3: Holley 4150 idle mixture and speed adjustment screws. WCFB 4 Barrel Carburetor Float Adjustment With carburetor installed and engine warmed up. Adjusting the WCFB float level and float drop. Carter Carburetor Manual A WGD usually has a pump arm like that of a WCFB (IIRC). WCFB Carburetor Cutting Out on Left Hand Turn. Adjust by bending throttle connector rod at deepest angle as shown. When that is the case, I bend the accel. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Piston force is too much for linkage. How To Replace the Carter WCFB 4 Barrel Fast Idle Spring? Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. 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). Notice holes from which linkage rods are removed so they can You may even have to resort to finding a used WCFB carburetor. *New Airhorn Gasket7. These diagrams include: Fig. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. 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 . Make sure the ball rattles. Loosen the clamp screw A Press. Back out throttle screw so that the throttle valve close completly. 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. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. They sometimes need trimming. Measure from center top surface of pontoons to air horn. 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. 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 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 Archives - Mikes Carburetor Parts Carter WCFB Build Sheets Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). They know their stuff and provide technical assistance and guides in both paper and video formats. The single step rods were used on some of the price leader carburetors (i.e. Rotate throttle stop screw E until engine idle at approx 500 RPM. Can't find the answer you're looking for? 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. 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. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Hold a straight edge across top of dust cover housing, next to the pump arm. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Must be made after fast idle adjustment. Ideas?? 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. Carter WCFB 4 Barrel Adjust Float - YouTube The ends of the connector rod should point to the throttle arm side. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Coat threads of screw with sealing compound and install it. Make sure the pontoons are centered and will not rub the bowl sides. Correct by removing any burrs or nicks. cm448 Carter WCFB Carburetor Manual - carbkitsource.com The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. 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. Anti-Rust "Dichromate" Finish**4. Add a couple drops of oil to the leather. 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? Some models have a pump relief check in the bottom of the fuel bowl. Be careful removing the intake check retainer. 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. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Adjust by bending unloader lip on throttle shaft lever. Carter WCFB 4 Barrel Carburetor Float System. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Carter WCFB 4 Barrel Carburetor Float System 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 . BBS) and were basically an on/off condition similar to the function of a power valve. Fig. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. The accelerator pump circuit resides on the primary side of. Probably around 4- 4.5lbs. You can also check the adjustment by measuring (F) which should be 18/64. What more could you ask for? Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. You need to run wire down all small passages. The Carter AFB uses weights, and therefore never goes out of adjustment.