Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. What Has Been Done to This Carburetor?1. Could the float bowl actually be the problem? Recheck float adjustments. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Place the choke housing toward the left and remove upper right main body to throttle body screw. Rotate throttle stop screw E until engine idle at approx 500 RPM. Examine the viton tip for any marks.Fuel pump pressure could be too high. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. 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. 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. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Carter WCFB 4 Barrel Metering Rod - Mikes Carburetor Parts Carter WCFB Accelerator Pump - Mikes Carburetor Parts The correct way is to use a fuel pump pressure gauge. The flat surface of the pump arm should be parallel to the straight edge. Older kits 30-70s. Be sure these ports are clear. The ends of the connector rod should point to the throttle arm side. This allows air instead of fuel to be drawn off 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. FREE to our customers that buy a rebuild kit. One is in the secondary venturi and the other just above the throttle plate. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Can't find the answer you're looking for? Carter WCFB 4 Barrel Carburetor Float System. 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 . I. DISASSEMBLY. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Measure float height as illustrated above. Metering rods for the WCFB have been out of production for several years now. Home - Carburetor Manual Ebooks You may even have to resort to finding a used WCFB carburetor. 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. New fuel pumps are especially suspect. 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. 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). 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. This restricts the flow of fuel. Your friend will receive an email from you with a link to our site. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). On 1956 models one point rich. Good quality print. 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. 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. Carter WCFB 4 Barrel Accelerator Pump Circuit - YouTube You can also check the adjustment by measuring (F) which should be 18/64. (note) The metering rods will fit into the jets loosely. WCFB carburetors, althqugh basically all units are allke. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. 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. Seat the intake check by tapping lightly in the hole to form a good seal. Solid fuel has the 2 tubes pointing up. When done you should see very little daylight around the valve. Then close throttle. This is percolation. 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. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Anti-Rust "Dichromate" Finish**4. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. When replacing them hold them tight against the wall while tightening the screw. Ethanol leaves deposits behind that acts like corrosion. Probably not since only one butterfly is open. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Most of the single step rods were steel. The mixture screw may be bent, or damaged. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Gasket removed as shown A. Check throttle linkage to make sure that primary throttle valves come to full wide open position. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. Carter WCFB, 4 barrel carburetor manual. As for the pump not squirting.I suspect the pump well isnt filling up. Loosen the clamp screw A Press. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Each size must be used in its own location. Hold in place and carefully tighten metering rod arm set screw (G). Ultra-Sonic Cleaning3. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Should You Build Your Own Carter Carburetor? - Carb-O - MotorTrend 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. Fig. but if it runs well you don't really need to make any adjustments. How Do You Look up Carter Carburetor ID Numbers Online? - Reference.com Is there a pointed check weight in the main discharge hole. If a loss of rpm is noted, or if the engine dies, and air leak exists. 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 Rochester and Carter replacement parts are interchangeable. The piston is brass and can be damaged very easily. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Carter WCFB Rebuild kits: Rebuild Kits. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Measure from toe B to air horn. To correct, remove carburetor and turn it upside down. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. The setups data is the same. 1957 Lincoln Accelerator Pump Carter Wcfb Fluorelastomer Cup Ethanol See figure 9F-2. Adjust by bending lip of float, not float arm. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Can't find the answer you're looking for? Pulloffs : CUFWCFB2 $ 0 . The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Make sure these are clear if you have percolation problems. Carter 2 Barrel BBD Adjustments - YouTube The fuel is also conducted through a passage in the air horn to the secondary needle seat. During high speed operation a vacuum exists at the pump jets. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Did the old gasket get removed? Carburetors equipped with an adjustable bowl vent require adjustment. Carter WCFB Parts Page - carburetion.com The adjustment of the pump is important in order to get the required fuel. This restricts the flow of fuel. 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. 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 cfm of the Carter WCFB four-barrel carburetor is approximately 400. 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. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. 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! 2: Carter AFB idle mixture and speed adjustment screws. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . The accelerator pump circuit resides on the primary side of this carburetor. The flat on top of the pump arm should be parallel to the straight edge. The file is in PDF format, you can download and save/print a copy. 19571958 Plymouth Fury Carter WCFB Carburetor *Remanufactured | eBay 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. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. 19591961 Chevrolet Carter WCFB Carburetor Be careful when removing the top of the carburetor that you don't force things and break the piston lever. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. If not, then find the check ball and make sure it is loose. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Low fuel pump pressure always check you motors manual for the correct pressure. 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 William C. Carter was born in Union City Tennessee in 1884. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. 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. Press down on vacuum piston link C until metering rods bottom in the carburetor body. They are staked in the hole. b. Adjust by bending the connector rod at the lower bend (E). The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. WCFB | Carter Carburetors, Parts & Rebuild Kits 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. Some models have a pump relief check in the bottom of the fuel bowl. 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. Test the fuel pump to be sure it isnt putting out too much pressure. Do not depress float lip against spring in needle, but let float rest of its own weight. 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. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Place the choke housing toward the left and remove upper right main body to throttle body screw. cm448 Carter WCFB Carburetor Manual - carbkitsource.com 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. Carter Metering Rod Technology - THE CARBURETOR SHOP Blow through the intake check passage to be sure the passage is open. Watch this. 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. 60 pages of great info. Carter WCFB Metering Rods - YouTube Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Carter WCFB Build Sheets Make sure the pontoons are centered and will not rub the bowl sides. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Other than that, great company to deal with. On the WCFB the check ball is usually at the bottom of the pump well. Be careful removing the intake check retainer. Back out throttle lever set screw until throttle valves seat in bores of carburetor. No metering rod gauges are necessary. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. 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. Install the pump connector rod (D) in the outer hole, long stroke. Air Bled has the venturi tube pointing down into the bore. Adjust idle screws D to produce a smooth idle of correct speed is obtained. building a wcfb 2x4 setup | Hot Rod Forum Run a blunt object around the inside of the leather cup to make sure any coating is broken. Ethanol gas does not have much if any lubrication. This check prevents excessive pressure in the discharge passage during acceleration. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Share. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Make sure there is a check needle below the main discharge. 1956-1957 Chevrolet Carter WCFB Carburetor Carter WCFB Fast Idle With carburetor installed and engine warmed up. Coat threads of screw with sealing compound and install it. Rotate throttle stop screw E until engine idle at approx 500 RPM. Seat the discharge check by tapping lightly in the hole to form a good seal. It needs about 4 lbs of pressure. Carter WCFB Adjustments - Mikes Carburetor Parts Recheck unloader settings with carburetor on the engine. Hold air horn upside down with floats in place and gasket removed. Carter Carburetor Identification - Carburetor kits, parts and manuals There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port).
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