pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Measure float height as illustrated above. If not then clean it and try again. Use a brass drift punch. 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. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 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. Low fuel pump pressure always check you motors manual for the correct pressure. Carter WCFB Parts Page - carburetion.com He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. These diagrams include: Fig. Watch on. All late model WCFB carburetors have three different length bowl cover screws. Secondarys are somehow stuck open (which amounts to a vacuum leak). Can't find the answer you're looking for? Be sure these ports are clear. The accelerator pump circuit resides on the primary side of this carburetor. To correct, remove carburetor and turn it upside down. This allows air instead of fuel to be drawn off the pump jets. Adjust by bending arm (J) on choke trip lever. 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. I have repeated multiple times with same results. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. 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. Install the pump connector rod (D) in the outer hole, long stroke. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. You need to run wire down all small passages. Carter WCFB 4 Barrel Carburetor Float System. This eliminates any bog or hesitation when acceleration. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Carter WCFB Technical - Carburetor Parts REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Rochester and Carter replacement parts are interchangeable. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. This is an electronic rebuild manual, no physical copy will be provided. FREE to our customers that buy a rebuild kit. Each size must be used in its own location. 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 idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. (note) The metering rods will fit into the jets loosely. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Seat the intake check by tapping lightly in the hole to form a good seal. Place the choke housing toward the left and remove upper right main body to throttle body screw. Carter WCFB Build Sheets The piston is brass and can be damaged very easily. Measure from center top surface of pontoons to air horn. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. 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. Adjust by bending throttle connector rod at upper angle (B). 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 . Metering rods for the WCFB have been out of production for several years now. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Change the choke setting to index. Rotate throttle stop screw E until engine idle at approx 500 RPM. Good quality print. On 1956 models one point rich. Two ports act as calibrated air bleeds. Could the float bowl actually be the problem? Outside top of early Carter tool box with correct decal. Ethanol leaves deposits behind that acts like corrosion. Test the floats in hot water and if you get any bubbles then they are leaking. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Adjust by bending float arms, making sure both pontoons on each float are the same height. The single step rods were used on some of the price leader carburetors (i.e. 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. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Put a straight edge across the dust cover as illustrated. Carter WCFB 4 Barrel Adjust Float. The Carter AFB uses weights, and therefore never goes out of adjustment. 1st check to make sure the fast idle linkage isnt holding the valves open. Check any vents to make sure they are open. Servicing The Rochester Quadrajet Carburetor - MotorTrend Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. Adjust by bending throttle connector rod at deepest angle as shown. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Rotate throttle stop screw E until engine idle at approx 500 RPM. It should not be opened up. One of the butterflies is open about 1/8 with the carburetor dis assembled. When that is the case, I bend the accel. Solid fuel has the 2 tubes pointing up. 1955 Chevy Hard starting after flooding. Carter WCFB Archives - Mikes Carburetor Parts Carter WGD Adjustments - Mikes Carburetor Parts Hold in place and carefully tighten metering rod arm set screw (G). Your friend will receive an email from you with a link to our site. 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. Make sure the air horn contacts the inner wall of the bowl. Carter WCFB Accelerator Pump - Mikes Carburetor Parts Aspringis inserted in the power piston hole, then the piston. Some models have a pump relief check in the bottom of the fuel bowl. 1955 Pontiac - Loading or Carburetor Flooding You should feel some pressure and fluid should not be bypassing the check needle. 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. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! 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. Quick test to see if the accelerator pump is working. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Adjusting the WCFB float level and float drop. THE CARBURETOR SHOP / Troubleshooting Carter WCFB Metering Rods - YouTube They know their stuff and provide technical assistance and guides in both paper and video formats. It's highlighted yellow and will look something like this. 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. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. THE CARBURETOR SHOP / Carter carburetor special tools 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. THE CARBURETOR SHOP / WCFB and 4-GC floats Do not depress float lip against spring in needle, but let float rest of its own weight. When removing valves they should be marked so that they get put back the same way. Can't find the answer you're looking for? 2: Carter AFB idle mixture and speed adjustment screws. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. *New Airhorn Gasket7. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Must be made after fast idle adjustment. but if it runs well you don't really need to make any adjustments. 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. 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. When closing the throttle, the accelerator moves up in the pump well. 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. 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. Hold a straight edge across top of dust cover housing, next to the pump arm. Ultra-Sonic Cleaning3. With throttle valves seated in bores, dust cover and gasket in place. Make sure the ball rattles. Then close throttle. 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 Rebuild - YouTube The ends of the connector rod should point to the throttle arm side. The flat surface of the pump arm should be parallel to the straight edge. Please complete the fields below to send your friend a link to this product. Some have a coating to give it a better shelf life.