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 should not be opened up. Hold a straight edge across top of dust cover housing, next to the pump arm. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Carter WCFB 4 Barrel Accelerator Pump Circuit 3,951 views Jul 13, 2018 33 Dislike Share Mikes Carburetor 20K subscribers https://www.carburetor-parts.com is providing this video about how the. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. During high speed operation a vacuum exists at the pump jets. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. 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. Make sure these are clear if you have percolation problems. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). I have repeated multiple times with same results. No metering rod gauges are necessary. 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! 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. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Back out throttle screw so that the throttle valve close completly. Carter WCFB, 4 barrel metering rod adjustment instructions. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. When that is the case, I bend the accel. We will contact you as soon as this product is available. You may even have to resort to finding a used WCFB carburetor. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. BBS) and were basically an on/off condition similar to the function of a power valve. Any pressure put on the needle will damage it. Test the needle by holding it down gently with a brass drift punch. 3: Holley 4150 idle mixture and speed adjustment screws. 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. The Carter AFB uses weights, and therefore never goes out of adjustment. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. 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? Outside top of early Carter tool box with correct decal. As for the pump not squirting.I suspect the pump well isnt filling up. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. You can also check the adjustment by measuring (F) which should be 18/64. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. 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 Why Doesn't Adjusting Idle Mixture Screws Make any Difference? 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Both valves should be closed. 5:04. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Gasket removed. The well should fill with fluid. Solid fuel has the 2 tubes pointing up. All These Part Numbers Interchange Into Our Part No. See figure 9F-2. 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. You cannot go wrong with Mikes carburetor in any way. This eliminates any bog or hesitation when acceleration. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. This can be done by looking at the impression on bowl cover gasket. This allows air instead of fuel to be drawn off the pump jets. Can't find the answer you're looking for? Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. Hold air horn upright with floats hanging. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Float drop not set, or fuel pump pressure too low. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. parts. Ideas?? The ends of the connector rod should point to the throttle arm side. 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 Adjust by bending the choke connector rod at lower angle (H). Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. What Has Been Done to This Carburetor?1. 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 fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Can you help me out? Examine the viton tip for any marks.Fuel pump pressure could be too high. The correct way is to use a fuel pump pressure gauge. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. The accelerator pump circuit resides on the primary side of. Metering rods for the WCFB have been out of production for several years now. Fast, secure e-book download. Use a brass drift punch. With mineral spirits in the float bowl, Raise the pump. but if it runs well you don't really need to make any adjustments. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. 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. 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. One is in the secondary venturi and the other just above the throttle plate. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Make sure the pump relief check is clean. The metering rod adjustment should be done after the pump adjustment. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. 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. Hold in place and carefully tighten metering rod arm set screw (G). 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. 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 Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . One of the butterflies is open about 1/8 with the carburetor dis assembled. 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). What more could you ask for? There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. The carburetor will flood. Also make sure one isnt rubbing on the side. The flat surface of the pump arm should be parallel to the straight edge. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Gasket between bowl and base is installed backwards (easy to do). Fig. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. Product information . Be careful removing the intake check retainer. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Seat the discharge check by tapping lightly in the hole to form a good seal. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Put some fluid in theaccelerator pumpwell and press down on the pump. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Loosen the clamp screw A Press. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. The Solid fuel is the later models BBDContents:00:00 intro00:34 air bled adjustments00:37 air bled float setting01:03 air bled fast idle type I01:25 air bled fast idle type II01:42 air bled fast idle type III01:58 air bled unloader02:24 air bled choke vacuum kick03:01 air bled automatic choke03:16 air bled pump04:08 air bled dashpot04:27 air bled idle speed \u0026 mixture04:58 air bled emission carburetors idle mixture06:00 air bled limiter cap06:36 solid fuel adjustments06:40 solid fuel float setting07:03 solid fuel metering rod07:27 solid fuel accelerator pump07:55 solid fuel bowl vent08:18 solid fuel fast idle cam08:43 solid fuel choke pull-off09:12 solid fuel automatic choke09:24 solid fuel egr dump valve09:46 solid fuel unloader10:08 solid fuel high altitude10:28 solid fuel idle speed \u0026 mixture12:11 solid fuel Limiter cap12:37 solid fuel fst idle12:51 solid fuel throttle positioner13:56 solid fuel vacuum throttle positioner14:31 solid fuel sol-vac15:04 solid fuel dashpot15:28 solid fuel transducer Can't find the answer you're looking for. cm448. Ethanol gas does not have much if any lubrication. Add a couple drops of oil to the leather. Change the choke setting to index. Gasket removed as shown A. 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. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. Make sure the air horn contacts the inner wall of the bowl. With throttle valves seated in bores, dust cover and gasket in place. Recheck unloader settings with carburetor on the engine. 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. Refer to the Adjustment Data Table for adjustment dimensions. These diagrams include: Fig. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Press down on vacuum piston link C until metering rods bottom in the carburetor body. The flat on top of the pump arm should be parallel to the straight edge. 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 . Then close throttle. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Could the float bowl actually be the problem? The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. This restricts the flow of fuel. Clogged idle tube, or passages in the idle circuit. Back out throttle stop screw until throttle valves seat in bores. The fuel is also conducted through a passage in the air horn to the secondary needle seat. 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 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. 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. 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. 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. Other than that, great company to deal with. The manual says to back out the throttle stop screw and hold the fast idle cam in the "choke open" position, then screw in the throttle stop screw until it just contacts the throttle lever arm, then give it another full turn. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements.