What Has Been Done to This Carburetor?1. Older kits 30-70s. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Disassembly2. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). When removing valves they should be marked so that they get put back the same way. If hard starting still exists change the choke setting to one point lean. 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. 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. Measure from center top surface of pontoons to air horn. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). I rebuilt a Carter WCFB carburetor with the lower auto choke setup. (note) The metering rods will fit into the jets loosely. Make sure the ball rattles. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Air Bled has the venturi tube pointing down into the bore. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. 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. Any pressure put on the needle will damage it. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. WCFB carburetors, althqugh basically all units are allke. Change the choke setting to index. The well should fill with fluid. Check throttle linkage to make sure that primary throttle valves come to full wide open position. When I slow down to an idle, my engine runs rough. During high speed operation a vacuum exists at the pump jets. 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. Rotate throttle stop screw E until engine idle at approx 500 RPM. All late model WCFB carburetors have three different length bowl cover screws. On 1956 models one point rich. Ultra-Sonic Cleaning3. Check any vents to make sure they are open. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. Adjust by bending the choke connector rod at lower angle (H). 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Can't find the answer you're looking for? Each size must be used in its own location. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Most of the single step rods were steel. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Both valves should be closed. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. 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. . No metering rod gauges are necessary. 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 Then close throttle. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. 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 Adjust idle screws D to produce a smooth idle of correct speed is obtained. *New Main Body Gasket8. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. This allows air instead of fuel to be drawn off the pump jets. Hold air horn upright with floats hanging. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Place the choke housing toward the left and remove upper right main body to throttle body screw. *New Accelerator Pump5. 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. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. The flat surface of the pump arm should be parallel to the straight edge. You can also check the adjustment by measuring (F) which should be 18/64. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Measure from toe B to air horn. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. 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 correct way is to use a fuel pump pressure gauge. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. 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. Carter WCFB, 4 barrel metering rod adjustment instructions. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. 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. If a loss of rpm is noted, or if the engine dies, and air leak exists. Anti-Rust "Dichromate" Finish**4. Make sure there is a check needle below the main discharge. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. The setups data is the same. The ends of the connector rod should point to the throttle arm side. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Two ports act as calibrated air bleeds. They know their stuff and provide technical assistance and guides in both paper and video formats. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. *New Airhorn Gasket7. Use a brass drift punch. 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). 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. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Everyone Has Started an Engine in the . 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. Back off the idle screw so that the throttle plates close completely. Place the choke housing toward the left and remove upper right main body to throttle body screw. Make sure the pump relief check is clean. This is percolation. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. BBS) and were basically an on/off condition similar to the function of a power valve. The accelerator pump circuit resides on the primary side of this carburetor. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Blow through the intake check passage to be sure the passage is open. Run a blunt object around the inside of the leather cup to make sure any coating is broken. 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. 3: Holley 4150 idle mixture and speed adjustment screws. Adjust by bending unloader lip on throttle shaft lever. 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. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. 1955 Chevy Hard starting after flooding. 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. Quick test to see if the accelerator pump is working. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. 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). Carter WCFB Fast Idle With carburetor installed and engine warmed up. I have repeated multiple times with same results. Correct by removing any burrs or nicks. Can you help me out? Any bubbles indicates a leak.Make sure the 2 floats are the same height. 1955 Pontiac - Loading or Carburetor Flooding 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 used metering rods with a single step, 2-step, 3-step, and 4-step. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Refer to the Adjustment Data Table for adjustment dimensions. Recheck float adjustments. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. As for the pump not squirting.I suspect the pump well isnt filling up. The adjustment of the pump is important in order to get the required fuel. Carter WCFB 4 Barrel Carburetor Float System. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. 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. parts. I. DISASSEMBLY. The fuel is also conducted through a passage in the air horn to the secondary needle seat. This is an electronic rebuild manual, no physical copy will be provided. This can be done by looking at the impression on bowl cover gasket. This restricts the flow of fuel. Adjust by bending lip of float, not float arm. The discharge check is seated at this time to prevent air being drawn into the pump well. Pulloffs : CUFWCFB2 $ 0 . Add a couple drops of oil to the leather. 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 bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. 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. The most complete document I have found. 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. Notice holes from which linkage rods are removed so they can Recheck unloader settings with carburetor on the engine. Share. Adjust by bending throttle connector rod at upper angle (B). 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 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 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 .
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