GM Corvette 1963-1982 Idle Speed and Mixture Repair Guide Fig. Back off the idle screw so that the throttle plates close completely. Rotate throttle stop screw E until engine idle at approx 500 RPM. This allows air instead of fuel to be drawn off the pump jets. WCFB carburetors, althqugh basically all units are allke. Be careful removing the intake check retainer. Carter WCFB 4 Barrel Carburetor Float System. 19571958 Plymouth Fury Carter WCFB Carburetor *Remanufactured | eBay Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Adjust by bending unloader lip on throttle shaft lever. The Carter AFB uses weights, and therefore never goes out of adjustment. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Carter WCFB Adjustments - Mikes Carburetor Parts A WGD usually has a pump arm like that of a WCFB (IIRC). . Notice holes from which linkage rods are removed so they can As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Add a couple drops of oil to the leather. Gasket between bowl and base is installed backwards (easy to do). Carter WCFB Adjustments Metering Rod Adjustment 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. Measure from center top surface of pontoons to air horn. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. Loosen the clamp screw A Press. Recheck unloader settings with carburetor on the engine. 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 Rebuild kits: Rebuild Kits. PDF Carter Carb Identification Chart - annualreport.psg.fr This check prevents excessive pressure in the discharge passage during acceleration. However, it is very similar and I found it very useful. Low fuel pump pressure always check you motors manual for the correct pressure. 19591961 Chevrolet Carter WCFB Carburetor The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Both valves should be closed. 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 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. 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. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. 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. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn The ends of the connector rod should point to the throttle arm side. Rochester and Carter replacement parts are interchangeable. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. (note) The metering rods will fit into the jets loosely. 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. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Make sure the pontoons are centered and will not rub the bowl sides. If not then clean it and try again. It needs about 4 lbs of pressure. 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. 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. The WCFB carburetor which came on some of the earliest The adjustment of the pump is important in order to get the required fuel. Back out throttle screw so that the throttle valve close completly. Should You Build Your Own Carter Carburetor? - Carb-O - MotorTrend Check throttle linkage to make sure that primary throttle valves come to full wide open position. You cannot go wrong with Mikes carburetor in any way. 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. Carter WCFB Metering Rods - YouTube The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Ethanol gas does not have much if any lubrication. Please complete the fields below to send your friend a link to this product. You should feel some pressure and fluid should not be bypassing the check needle. Air Bled has the venturi tube pointing down into the bore. Eckler's Premier Quality Products 57132129 Chevy Carburetor Rebuild Kit Carter WCFB Replacement Kit Includes All Gaskets, Seals, Check Balls, Springs, Accelerator Pump & Needle Valve Read more CARTER 4 Barrel WCFB DUAL CARBURETOR KITS & FUEL FILTERS 1961-65 CHEVROLET 1955-56 DESOTO April 18, 2018 Carter Carburetors Rebuild Kits Make sure the pump relief check is clean. 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! 3: Holley 4150 idle mixture and speed adjustment screws. 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 fuel is also conducted through a passage in the air horn to the secondary needle seat. If hard starting still exists change the choke setting to one point lean. *New Main Body Gasket8. Carter WCFB Archives - Mikes Carburetor Parts Tyler's Forgotten Car Rescue 22,933 views. Any pressure put on the needle will damage it. DO NOT apply any pressure on the needle. In this video I show you how to replace the fast idle spring on the WCFB carburetor. This eliminates any bog or hesitation when acceleration. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. When replacing them hold them tight against the wall while tightening the screw. 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. You can also check the adjustment by measuring (F) which should be 18/64. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Carter WCFB Build Sheets Solid fuel has the 2 tubes pointing up. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. The file is in PDF format, you can download and save/print a copy. Correct by removing any burrs or nicks. Make sure there is a check needle below the main discharge. It's highlighted yellow and will look something like this. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Float drop not set, or fuel pump pressure too low. Blow through the intake check passage to be sure the passage is open. Carter WGD Adjustments - Mikes Carburetor Parts Test the fuel pump to be sure it isnt putting out too much pressure. The carburetor will flood. Ideas?? There should be a retainer keeping the check ball in place. 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). building a wcfb 2x4 setup | Hot Rod Forum Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Seat the discharge check by tapping lightly in the hole to form a good seal. THE CARBURETOR SHOP / Troubleshooting Place the choke housing toward the left and remove upper right main body to throttle body screw. Older kits 30-70s. Recheck float adjustments. The well should fill with fluid. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. You are flooding (getting too much gas in the float bowl), caused by these types of problems. This restricts the flow of fuel. 1955 Pontiac - Loading or Carburetor Flooding 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 single step rods were used on some of the price leader carburetors (i.e. When removing valves they should be marked so that they get put back the same way. Then close throttle. Carter WCFB 4 Barrel Carburetor Rebuild - YouTube What more could you ask for? Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Can't find the answer you're looking for? PDF Parts List Carter Carburetor Model Wcfb Can't find the answer you're looking for? The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. 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. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Test the needle by holding it down gently with a brass drift punch. 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. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. 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. Make sure the air cleaner gasket does not block the bowl vents. 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. 1st check to make sure the fast idle linkage isnt holding the valves open. What Has Been Done to This Carburetor?1. Carter WCFB 4 Barrel Carburetor Float System. Metering rods for the WCFB have been out of production for several years now. Adjust idle screws D to produce a smooth idle of correct speed is obtained. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. 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. Some models have a pump relief check in the bottom of the fuel bowl. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Hold air horn upright with floats hanging. Use a brass drift punch. Place the choke housing toward the left and remove upper right main body to throttle body screw. 1: Carter WCFB idle mixture and speed adustment screw location. Do not depress float lip against spring in needle, but let float rest of its own weight. Carter 2 Barrel BBD Adjustments - YouTube You may even have to resort to finding a used WCFB carburetor. Each size must be used in its own location. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. The ends of the connector rod should point to the throttle arm side. Carter WCFB Carburetor Manual - Mike's Carburetor Parts How To Replace the Carter WCFB 4 Barrel Fast Idle Spring? 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. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Carter WCFB Accelerator Pump - Mikes Carburetor Parts To correct, remove carburetor and turn it upside down. Your friend will receive an email from you with a link to our site. Can't find the answer you're looking for. Did the old gasket get removed? New fuel pumps are especially suspect. 60 pages of great info. How to Modify a Carter or Edelbrock Carburetor - Muscle Car DIY Any bubbles indicates a leak.Make sure the 2 floats are the same height. Technical Details. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Product information . 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. Check any vents to make sure they are open. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. 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. 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 an electronic rebuild manual, no physical copy will be provided. Other than that, great company to deal with. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. 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. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. The fuel is also conducted through a passage in the air horn to the secondary needle seat. 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 . They work fine when I push hard down on the piston. How Do You Look up Carter Carburetor ID Numbers Online? - Reference.com Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Check the low speed jets to make sure they are clear (#44). The flat on top of the pump arm should be parallel to the straight edge. Carter WCFB Parts Page - carburetion.com Be sure these ports are clear. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. THE CARBURETOR SHOP / WCFB and 4-GC floats Adjust by bending the connector rod at the lower bend (E). The download link will expire in 30 days. Carter WCFB 4 Barrel Carburetor Float System Carter WCFB 4 Barrel Carburetor Float System. They know their stuff and provide technical assistance and guides in both paper and video formats. Back out throttle lever set screw until throttle valves seat in bores of carburetor. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. This can be done by looking at the impression on bowl cover gasket. Most of the single step rods were steel. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Piston force is too much for linkage. 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). Adjust by bending lip of float, not float arm. 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. 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. Pulloffs : CUFWCFB2 $ 0 . Outside top of early Carter tool box with correct decal. Change the choke setting to index. 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. 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. When I slow down to an idle, my engine runs rough. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever.

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