This box did not have a part number. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. The accelerator pump circuit resides on the primary side of. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Everyone Has Started an Engine in the . 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. It should not be opened up. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Adjust by bending lip of float, not float arm. 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. Adjust by bending throttle connector rod at deepest angle as shown. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. When replacing them hold them tight against the wall while tightening the screw. 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. 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. Fast, secure e-book download. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. They know their stuff and provide technical assistance and guides in both paper and video formats. 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. 1955 Chevy Hard starting after flooding. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. On 1956 models one point rich. Some models have a pump relief check in the bottom of the fuel bowl. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. 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. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. 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. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Piston force is too much for linkage. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Can you help me out? Blowing out passages will not get them clean enough. 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. *New Float6. but if it runs well you don't really need to make any adjustments. Coat threads of screw with sealing compound and install it. Note te larger box, and the number of additional tools from the 1935 set. 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. Then close throttle. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). . They need to be centered in the bowl.Fuel could be leaking around the needle & seat. 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. See figure 9F-2. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. 1955 Pontiac - Loading or Carburetor Flooding Be sure these ports are clear. 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! 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. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. One is in the secondary venturi and the other just above the throttle plate. Free shipping for many products! Carburetors equipped with an adjustable bowl vent require adjustment. Disassembly2. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . 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. This restricts the flow of fuel. Make sure the pontoons are centered and will not rub the bowl sides. New fuel pumps are especially suspect. Back out throttle lever set screw until throttle valves seat in bores of carburetor. Fig. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. What Has Been Done to This Carburetor?1. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. 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). Adjusting the WCFB float level and float drop. 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. What more could you ask for? 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). Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). 2: Carter AFB idle mixture and speed adjustment screws. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. In this video I show you how to replace the fast idle spring on the WCFB carburetor. Refer to the Adjustment Data Table for adjustment dimensions. parts. When closing the throttle, the accelerator moves up in the pump well. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Share. The Carter AFB uses weights, and therefore never goes out of adjustment. Hold a straight edge across top of dust cover housing, next to the pump arm. 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. a. Can't find the answer you're looking for? FREE to our customers that buy a rebuild kit. Pulloffs : CUFWCFB2 $ 0 . When that is the case, I bend the accel. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Carter WCFB 4 Barrel Carburetor Float System. Rotate throttle stop screw E until engine idle at approx 500 RPM. 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. 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). You may even have to resort to finding a used WCFB carburetor. 60 pages of great info. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Rotate throttle stop screw E until engine idle at approx 500 RPM. 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. Take the top off and put the pump in the well all the way to the bottom. Both valves should be closed. Install the pump connector rod (D) in the outer hole, long stroke. Technical Details. Carter WCFB 4 Barrel Carburetor Float System. The flat on top of the pump arm should be parallel to the straight edge. Can't find the answer you're looking for? The vacuum piston is no longer produced and can only be found as a NOS piece, or used. 3: Holley 4150 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. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. *New Main Body Gasket8. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Place the choke housing toward the left and remove upper right main body to throttle body screw. Some have a coating to give it a better shelf life. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). 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 5:04. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. We will contact you as soon as this product is available. The correct way is to use a fuel pump pressure gauge. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Test the fuel pump to be sure it isnt putting out too much pressure. *New Accelerator Pump5. Your friend will receive an email from you with a link to our site. No metering rod gauges are necessary. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. Can't find the answer you're looking for? cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. 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 (. On the WCFB the check ball is usually at the bottom of the pump well. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. 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 single step rods were used on some of the price leader carburetors (i.e. The piston is brass and can be damaged very easily. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Also make sure one isnt rubbing on the side. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Secondarys are somehow stuck open (which amounts to a vacuum leak). 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. WCFB Carburetor Cutting Out on Left Hand Turn. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. Can't find the answer you're looking for?