You are flooding (getting too much gas in the float bowl), caused by these types of problems. With carburetor installed and engine warmed up. If a loss of rpm is noted, or if the engine dies, and air leak exists. When done you should see very little daylight around the valve. Change the choke setting to index. The flat surface of the pump arm should be parallel to the straight edge. On 1956 models one point rich. Your friend will receive an email from you with a link to our site. (note) The metering rods will fit into the jets loosely. *New Accelerator Pump5. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Carter WCFB Archives - Mikes Carburetor Parts 1952 Carter WCFBsetting idle - Discussion Forums The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Adjust by bending the choke connector rod at lower angle (H). 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. Check any vents to make sure they are open. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. On the WCFB the check ball is usually at the bottom of the pump well. 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. Take the top off and put the pump in the well all the way to the bottom. PDF Parts List Carter Carburetor Model Wcfb DO NOT apply any pressure on the needle. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Carter WCFB 4 Barrel Carburetor Float System. Back out throttle lever set screw until throttle valves seat in bores of carburetor. If not then clean it and try again. 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). Most of the single step rods were steel. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. The ends of the connector rod should point to the throttle arm side. 2: Carter AFB idle mixture and speed adjustment screws. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Anti-Rust "Dichromate" Finish**4. Carter WCFB Adjustments - Mikes Carburetor Parts cm448 Carter WCFB Carburetor Manual - carbkitsource.com 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. Make sure these are clear if you have percolation problems. We will contact you as soon as this product is available. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Carter WCFB 4 Barrel Carburetor Rebuild - YouTube 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn 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. 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. Adjust by bending the connector rod at the lower bend (E). Add a couple drops of oil to the leather. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Carter WCFB 4 Barrel Carburetor Float System. Adjust by bending throttle connector rod at deepest angle as shown. When I slow down to an idle, my engine runs rough. How Do You Look up Carter Carburetor ID Numbers Online? - Reference.com PDF Carter Carb Identification Chart - annualreport.psg.fr Carter WCFB Rebuild kits: Rebuild Kits. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! They are staked in the hole. William C. Carter was born in Union City Tennessee in 1884. REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Enter Carb Number. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. The file is in PDF format, you can download and save/print a copy. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . 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. 60 pages of great info. 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. It's highlighted yellow and will look something like this. Someone has installed it improperly. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. I have repeated multiple times with same results. 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. There should be a retainer keeping the check ball in place. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. What Has Been Done to This Carburetor?1. Carter WGD Adjustments - Mikes Carburetor Parts 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. The flat on top of the pump arm should be parallel to the straight edge. 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. 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. This is an electronic rebuild manual, no physical copy will be provided. 1957 Lincoln Accelerator Pump Carter Wcfb Fluorelastomer Cup Ethanol Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. The mixture screw may be bent, or damaged. The single step rods were used on some of the price leader carburetors (i.e. It needs about 4 lbs of pressure. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Back out throttle screw so that the throttle valve close completly. You can also check the adjustment by measuring (F) which should be 18/64. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. 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! Clogged idle tube, or passages in the idle circuit. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. They sometimes need trimming. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Both Carter and Rochester engineers determined that, on some applications, the float level in the primary side of the carburetor should be different than in the secondary side of the carburetor. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. b. 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 Gasket between bowl and base is installed backwards (easy to do). See figure 9F-2. How To Replace the Carter WCFB 4 Barrel Fast Idle Spring? They work fine when I push hard down on the piston. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. *New Main Body Gasket8. Carter WCFB Carburetor Manual - Mike's Carburetor Parts It should not be opened up. A WGD usually has a pump arm like that of a WCFB (IIRC). Low fuel pump pressure always check you motors manual for the correct pressure. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Can't find the answer you're looking for. No metering rod gauges are necessary. Carter WCFB Fast Idle With carburetor installed and engine warmed up. 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. New fuel pumps are especially suspect. Piston force is too much for linkage. 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 Carter AFB uses weights, and therefore never goes out of adjustment. Each size must be used in its own location. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Carter WCFB, 4 barrel metering rod adjustment instructions. *New Float6. 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 isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Procedure is as follows: with the throttle lever set screw backed out and throttle valves seated in bores of carburetor, press down on vacumeter link (D) until metering rods bottom at (E). With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Seat the intake check by tapping lightly in the hole to form a good seal. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Watch this. Float drop not set, or fuel pump pressure too low. 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? 19591961 Chevrolet Carter WCFB Carburetor 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Ideas?? Recheck unloader settings with carburetor on the engine. Adjust by bending arm (J) on choke trip lever. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Put some fluid in theaccelerator pumpwell and press down on the pump. 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. Probably not since only one butterfly is open. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Can't find the answer you're looking for? Measure float height as illustrated above. Disassembly2. When that is the case, I bend the accel. Metering rods for the WCFB have been out of production for several years now. 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. Any pressure put on the needle will damage it. The metering rod adjustment should be done after the pump adjustment. but if it runs well you don't really need to make any adjustments. cm448. Install the pump connector rod (D) in the outer hole, long stroke. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Carter WCFB 4 Barrel Carburetor Float System I. DISASSEMBLY. 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. Disassembly2. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. Ethanol leaves deposits behind that acts like corrosion. 1955 Chevy Hard starting after flooding. Carter WCFB Accelerator Pump - Mikes Carburetor Parts Adjust by bending float arms, making sure both pontoons on each float are the same height. 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. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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. Hold in place and carefully tighten metering rod arm set screw (G). building a wcfb 2x4 setup | Hot Rod Forum 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. Carter WCFB Carburetor Troubleshooting Some have a coating to give it a better shelf life. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. 1st check to make sure the fast idle linkage isnt holding the valves open. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Adjusting the WCFB float level and float drop. Correct by removing any burrs or nicks. 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. Should You Build Your Own Carter Carburetor? - Carb-O - MotorTrend Make sure the air horn contacts the inner wall of the bowl. Test the floats in hot water and if you get any bubbles then they are leaking. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. Do not depress float lip against spring in needle, but let float rest of its own weight. You may even have to resort to finding a used WCFB carburetor. 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. The well should fill with fluid. 3: Holley 4150 idle mixture and speed adjustment screws. Aspringis inserted in the power piston hole, then the piston. Make sure manifold heat control valve is free. Air Bled has the venturi tube pointing down into the bore. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Carter WCFB 4 Barrel Adjust Float. Carter WCFB Build Sheets Pulloffs : CUFWCFB2 $ 0 . THE CARBURETOR SHOP / Carter carburetor special tools THE CARBURETOR SHOP / WCFB and 4-GC floats Carter WCFB Technical - Carburetor Parts The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. 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 . Hold a straight edge across top of dust cover housing, next to the pump arm. If hard starting still exists change the choke setting to one point lean. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Carter WCFB Metering Rods - YouTube However, it is very similar and I found it very useful. Adjust by bending lip of float, not float arm. 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 . 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. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Can't find the answer you're looking for? Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Quick test to see if the accelerator pump is working. To correct, remove carburetor and turn it upside down. This is an electronic rebuild manual, no physical copy will be provided. Ultra-Sonic Cleaning3. Adjust by bending throttle connector rod at upper angle (B). The fuel is also conducted through a passage in the air horn to the secondary needle seat. Adjust by bending unloader lip on throttle shaft lever. You need to run wire down all small passages. This allows air instead of fuel to be drawn off the pump jets. Some models have a pump relief check in the bottom of the fuel bowl. This is percolation. Fast, secure e-book download. Carter Metering Rod Technology - THE CARBURETOR SHOP Make sure the pump relief check is clean. Both valves should be closed. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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.
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