If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Carter WCFB, 4 barrel metering rod adjustment instructions. 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. This allows air instead of fuel to be drawn off the pump jets. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. The piston is brass and can be damaged very easily. Do not depress float lip against spring in needle, but let float rest of its own weight. Hold in place and carefully tighten metering rod arm set screw (G). Adjusting the WCFB float level and float drop. All late model WCFB carburetors have three different length bowl cover screws. They are staked in the hole. Adjust idle screws D to produce a smooth idle of correct speed is obtained. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Carter WCFB Adjustments - Mikes Carburetor Parts 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. . a. To correct, remove carburetor and turn it upside down. 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. The accelerator pump circuit resides on the primary side of. Check any vents to make sure they are open. Rotate throttle stop screw E until engine idle at approx 500 RPM. Carter WCFB Specifications - Mikes Carburetor Parts Adjust by bending arm (J) on choke trip lever. 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. THE CARBURETOR SHOP / WCFB and 4-GC floats 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Share. Air Bled has the venturi tube pointing down into the bore. Secondarys are somehow stuck open (which amounts to a vacuum leak). The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Adjust by bending throttle connector rod at deepest angle as shown. Fig. How Do You Look up Carter Carburetor ID Numbers Online? - Reference.com The single step rods were used on some of the price leader carburetors (i.e. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. On the WCFB the check ball is usually at the bottom of the pump well. 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. Do not depress float lip against spring in needle, but let float rest of its own weight. They know their stuff and provide technical assistance and guides in both paper and video formats. Hold air horn upside down with floats in place and gasket removed. Carter WGD Adjustments - Mikes Carburetor Parts Notice holes from which linkage rods are removed so they can You cannot go wrong with Mikes carburetor in any way. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). The well should fill with fluid. Can't find the answer you're looking for. Each size must be used in its own location. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. William C. Carter was born in Union City Tennessee in 1884. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Tyler's Forgotten Car Rescue 22,933 views. 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. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Put some fluid in theaccelerator pumpwell and press down on the pump. Two ports act as calibrated air bleeds. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. No metering rod gauges are necessary. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. This check prevents excessive pressure in the discharge passage during acceleration. 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. I have repeated multiple times with same results. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Any pressure put on the needle will damage it. Must be made after fast idle adjustment. During high speed operation a vacuum exists at the pump jets. Back out throttle stop screw until throttle valves seat in bores. Add a couple drops of oil to the leather. 1: Carter WCFB idle mixture and speed adustment screw location. I. DISASSEMBLY. Be sure these ports are clear. 1956-1957 Chevrolet Carter WCFB Carburetor The fuel is also conducted through a passage in the air horn to the secondary needle seat. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Adjust by bending float arms, making sure both pontoons on each float are the same height. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Make sure the air cleaner gasket does not block the bowl vents. Make sure manifold heat control valve is free. However, it is very similar and I found it very useful. Carter WCFB 4 Barrel Carburetor 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 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. Examine the viton tip for any marks.Fuel pump pressure could be too high. 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. Adjust by bending throttle connector rod at upper angle (B). 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). 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. Make sure the air horn contacts the inner wall of the bowl. REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet 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. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. How to Modify a Carter or Edelbrock Carburetor - Muscle Car DIY This box did not have a part number. Carter WCFB Build Sheets Some models have a pump relief check in the bottom of the fuel bowl. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Gasket removed. Put a straight edge across the dust cover as illustrated. 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. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. A WGD usually has a pump arm like that of a WCFB (IIRC). See figure 9F-2. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. This eliminates any bog or hesitation when acceleration. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. When replacing them hold them tight against the wall while tightening the screw. When removing valves they should be marked so that they get put back the same way. Blowing out passages will not get them clean enough. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Rotate throttle stop screw E until engine idle at approx 500 RPM. As for the pump not squirting.I suspect the pump well isnt filling up. 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 Accelerator Pump Quick test to see if the accelerator pump is working. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Carter WCFB 4 Barrel Carburetor Float System. 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. 2: Carter AFB idle mixture and speed adjustment screws. 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. Home - Carburetor Manual Ebooks Measure from center top surface of pontoons to air horn. Adjust by bending the connector rod at the lower bend (E). Carter WCFB Parts Page - carburetion.com When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. If hard starting still exists change the choke setting to one point lean. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. We will contact you as soon as this product is available. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. cm448 Carter WCFB Carburetor Manual - carbkitsource.com Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Carter WCFB 4 Barrel Carburetor Float System. Gasket between bowl and base is installed backwards (easy to do). DO NOT apply any pressure on the needle. Carter WCFB Technical - Carburetor Parts From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. Adjust by bending unloader lip on throttle shaft lever. Quick test to see if the accelerator pump is working. THE CARBURETOR SHOP / Carter carburetor special tools The setups data is the same. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. 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 Test the needle by holding it down gently with a brass drift punch. 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 . 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. 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. 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.