This is an electronic rebuild manual, no physical copy will be provided. Carter WCFB Rebuild Kit Selection Carter WCFB Build Sheets Carter WCFB Adjustments Carter WCFB 4 Barrel Carburetor Float System Carter WCFB Accelerator Pump BY CARB TYPE GENERAL TROUBLESHOOTING FAQs INJECTORS PURCHASE PARTS MANUALS BLOG Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). *New Main Body Gasket8. 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. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Pulloffs : CUFWCFB2 $ 0 . Test the floats in hot water and if you get any bubbles then they are leaking. Loosen the clamp screw A Press. Rochester and Carter replacement parts are interchangeable. Place the choke housing toward the left and remove upper right main body to throttle body screw. The accelerator pump circuit resides on the primary side of this carburetor. 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. One of the butterflies is open about 1/8 with the carburetor dis assembled. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). Everyone Has Started an Engine in the . Change the choke setting to index. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Other than that, great company to deal with. 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. Adjust by bending float arms, making sure both pontoons on each float are the same height. 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. 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? 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. When closing the throttle, the accelerator moves up in the pump well. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Blow through the intake check passage to be sure the passage is open. Technical Details. Also make sure one isnt rubbing on the side. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. BBS) and were basically an on/off condition similar to the function of a power valve. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. The flat surface of the pump arm should be parallel to the straight edge. Float drop not set, or fuel pump pressure too low. This restricts the flow of fuel. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 1: Carter WCFB idle mixture and speed adustment screw location. 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. Both valves should be closed. 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 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. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. intro Carter WCFB 4 Barrel Carburetor Rebuild Mikes Carburetor 21.5K subscribers Subscribe 51 Share 3.1K views 9 months ago Disassemble & assemble your Carter WCFB 4 barrel. Make sure the pontoons are centered and will not rub the bowl sides. Do not depress float lip against spring in needle, but let float rest of its own weight. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. If a loss of rpm is noted, or if the engine dies, and air leak exists. This spring is a bit complicated so this video will be very helpful when you change your spring.Find this WCFB spring here: https://www.carburetor-parts.com/wcfb-66d400.htmlFind WCFB parts here:https://www.carburetor-parts.com/wcfb-partscontents:00:0000:42 removing fast idle cam assembly00:56 taking the assembly apart piece by piece01:07 removing the old spring01:22 installing spring02:15 which direction does the pieces go?02:38 assembling the pieces03:16 installing the cam assembly onto the carburetor Some have a coating to give it a better shelf life. Coat threads of screw with sealing compound and install it. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Measure from toe B to air horn. Adjust by bending arm (J) on choke trip lever. They are staked in the hole. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Install the pump connector rod (D) in the outer hole, long stroke. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Hold throttle valve wide open and close choke valve as far as possible without forcing. *New Airhorn Gasket7. The fuel is also conducted through a passage in the air horn to the secondary needle seat. I have repeated multiple times with same results. Test the fuel pump to be sure it isnt putting out too much pressure. Take the top off and put the pump in the well all the way to the bottom. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. 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. Make sure the pump relief check is clean. Carter WCFB, 4 barrel carburetor manual. The accelerator pump circuit resides on the primary side of. Carter WCFB 4 Barrel Carburetor Float System. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. Refer to the Adjustment Data Table for adjustment dimensions. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. 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. 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. Be careful removing the intake check retainer. Free shipping for many products! See figure 9F-2. Examine the viton tip for any marks.Fuel pump pressure could be too high. Coat threads of screw with sealing compound and install it. 2: Carter AFB idle mixture and speed adjustment screws. 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. 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. Watch on. You can also check the adjustment by measuring (F) which should be 18/64. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . 5:04. The carburetor will flood. Two ports act as calibrated air bleeds. 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 throttle connector rod at upper angle (B). This eliminates any bog or hesitation when acceleration. Aspringis inserted in the power piston hole, then the piston. a. The adjustment of the pump is important in order to get the required fuel. Is there a pointed check weight in the main discharge hole. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. This check prevents excessive pressure in the discharge passage during acceleration. You need to run wire down all small passages. You should feel some pressure and fluid should not be bypassing the check needle. Disassembly2. The correct way is to use a fuel pump pressure gauge. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Notice holes from which linkage rods are removed so they can I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. (note) The metering rods will fit into the jets loosely. Be sure these ports are clear. Install the pump connector rod (D) in the outer hole, long stroke. 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). Gasket removed as shown A. 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. Blowing out passages will not get them clean enough. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. When removing valves they should be marked so that they get put back the same way. If not then clean it and try again. 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't find the answer you're looking for? These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Make sure these are clear if you have percolation problems. FREE to our customers that buy a rebuild kit. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Gasket between bowl and base is installed backwards (easy to do). When that is the case, I bend the accel. All late model WCFB carburetors have three different length bowl cover screws. 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 . Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Tyler's Forgotten Car Rescue 22,933 views. Some models have a pump relief check in the bottom of the fuel bowl. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Carter WCFB 4 Barrel Carburetor Float System. 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 . When I slow down to an idle, my engine runs rough. 1955 Chevy Hard starting after flooding. William C. Carter was born in Union City Tennessee in 1884. These diagrams include: Fig. The WCFB carburetor which came on some of the earliest Carter WCFB 4 Barrel Adjust Float. Measure float height as illustrated above. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. 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. The Carter AFB uses weights, and therefore never goes out of adjustment. Quick test to see if the accelerator pump is working. 3: Holley 4150 idle mixture and speed adjustment screws.
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