Hold in place and carefully tighten metering rod arm set screw (G). If a loss of rpm is noted, or if the engine dies, and air leak exists. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. 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 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. Make sure manifold heat control valve is free. Pulloffs : CUFWCFB2 $ 0 . Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Measure from toe B to air horn. Carter WCFB 4 Barrel Carburetor Float System. Float drop not set, or fuel pump pressure too low. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Some models have a pump relief check in the bottom of the fuel bowl. The setups data is the same. Install the pump connector rod (D) in the outer hole, long stroke. Adjust by bending arm (J) on choke trip lever. Metering rods for the WCFB have been out of production for several years now. Hold air horn upright with floats hanging. Sometimes scraping around the edges with an awl will remove the staking. They work fine when I push hard down on the piston. Tyler's Forgotten Car Rescue 22,933 views. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Both valves should be closed. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. When that is the case, I bend the accel. Gasket between bowl and base is installed backwards (easy to do). Solid fuel has the 2 tubes pointing up. They are staked in the hole. There should be a retainer keeping the check ball in place. On 1956 models one point rich. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. You cannot go wrong with Mikes carburetor in any way. 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. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Measure float height as illustrated above. The fuel is also conducted through a passage in the air horn to the secondary needle seat. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. When I slow down to an idle, my engine runs rough. Make sure the air horn contacts the inner wall of the bowl. Free shipping for many products! 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). 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. 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? 1955 Pontiac - Loading or Carburetor Flooding Disassembly2. Is there a pointed check weight in the main discharge hole. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). The single step rods were used on some of the price leader carburetors (i.e. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. To correct, remove carburetor and turn it upside down. Rotate screw C, or bend tang, until throttle valves are open the distance listed in, With throttle valves held wide open, there should be a clearance between upper edge of choke valve and the inner wall of air horn (. Air Bled has the venturi tube pointing down into the bore. Correct by removing any burrs or nicks. 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 . FREE to our customers that buy a rebuild kit. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! This box did not have a part number. Any pressure put on the needle will damage it. 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. 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 When removing valves they should be marked so that they get put back the same way. Back out throttle lever set screw until throttle valves seat in bores of carburetor. This is an electronic rebuild manual, no physical copy will be provided. The flat on top of the pump arm should be parallel to the straight edge. Gasket removed. Ethanol leaves deposits behind that acts like corrosion. What Has Been Done to This Carburetor?1. Disassembly2. Adjust by bending unloader lip on throttle shaft lever. Coat threads of screw with sealing compound and install it. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. As for the pump not squirting.I suspect the pump well isnt filling up. 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. Carter WCFB 4 Barrel Adjust Float. Adjust by bending lip of float, not float arm. Carter WCFB Build Sheets 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. BBS) and were basically an on/off condition similar to the function of a power valve. The ends of the connector rod should point to the throttle arm side. 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. Carter WCFB, 4 barrel carburetor manual. Adjust by bending float arms, making sure both pontoons on each float are the same height. Some have a coating to give it a better shelf life. 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 accelerator pump circuit resides on the primary side of. Can't find the answer you're looking for. Check any vents to make sure they are open. 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 Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. This can be done by looking at the impression on bowl cover gasket. This is percolation. Other than that, great company to deal with. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. The adjustment of the pump is important in order to get the required fuel. Gasket removed as shown A. Must be made after fast idle adjustment. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Adjust idle screws D to produce a smooth idle of correct speed is obtained. 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 Clogged idle tube, or passages in the idle circuit. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. DO NOT apply any pressure on the needle. This check prevents excessive pressure in the discharge passage during acceleration. On the WCFB the check ball is usually at the bottom of the pump well. The metering rod adjustment should be done after the pump adjustment. If hard starting still exists change the choke setting to one point lean. WCFB Carburetor Cutting Out on Left Hand Turn. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. 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. With throttle valves seated in bores, dust cover and gasket in place. The carburetor will flood. All These Part Numbers Interchange Into Our Part No. WCFB carburetors, althqugh basically all units are allke. but if it runs well you don't really need to make any adjustments. They sometimes need trimming. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Do not depress float lip against spring in needle, but let float rest of its own weight. Anti-Rust "Dichromate" Finish**4. Secondarys are somehow stuck open (which amounts to a vacuum leak). 3: Holley 4150 idle mixture and speed adjustment screws. Could the float bowl actually be the problem? When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Probably not since only one butterfly is open. Seat the discharge check by tapping lightly in the hole to form a good seal. 2: Carter AFB idle mixture and speed adjustment screws. Enter Carb Number. *New Accelerator Pump5. The piston is brass and can be damaged very easily. 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. When done you should see very little daylight around the valve. All late model WCFB carburetors have three different length bowl cover screws. 1: Carter WCFB idle mixture and speed adustment screw location. Back out throttle screw so that the throttle valve close completly. One of the butterflies is open about 1/8 with the carburetor dis assembled. 1st check to make sure the fast idle linkage isnt holding the valves open. 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. The accelerator pump circuit resides on the primary side of this carburetor. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. New fuel pumps are especially suspect. Back out throttle stop screw until throttle valves seat in bores. Put a straight edge across the dust cover as illustrated. Adjust by bending the connector rod at the lower bend (E). Carter WCFB, 4 barrel metering rod adjustment instructions. This restricts the flow of fuel. Be sure these ports are clear. 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. 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. Fig. This eliminates any bog or hesitation when acceleration. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Loosen the clamp screw A Press. 5:04. 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. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. It's highlighted yellow and will look something like this. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. 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. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Add a couple drops of oil to the leather. 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). Can't find the answer you're looking for? Blowing out passages will not get them clean enough. Ultra-Sonic Cleaning3. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. (note) The metering rods will fit into the jets loosely. Recheck float adjustments. The correct way is to use a fuel pump pressure gauge. 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. Carter WCFB 4 Barrel Carburetor Float System. Hold air horn upside down with floats in place and gasket removed. 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 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. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Do not depress float lip against spring in needle, but let float rest of its own weight. Make sure the air cleaner gasket does not block the bowl vents. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . You need to run wire down all small passages. Examine the viton tip for any marks.Fuel pump pressure could be too high. With mineral spirits in the float bowl, Raise the pump. When closing the throttle, the accelerator moves up in the pump well. Check the low speed jets to make sure they are clear (#44). I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. The discharge check is seated at this time to prevent air being drawn into the pump well. 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. b. Test the fuel pump to be sure it isnt putting out too much pressure. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. With carburetor installed and engine warmed up. Coat threads of screw with sealing compound and install it. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Everyone Has Started an Engine in the . 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. Adjusting the WCFB float level and float drop. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. This is an electronic rebuild manual, no physical copy will be provided. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. I. DISASSEMBLY. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Each size must be used in its own location. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Did the old gasket get removed? 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. 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. Test the floats in hot water and if you get any bubbles then they are leaking. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Back off the idle screw so that the throttle plates close completely. I have repeated multiple times with same results. Take the top off and put the pump in the well all the way to the bottom. The Carter AFB uses weights, and therefore never goes out of adjustment. 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. 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 most complete document I have found. Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. See figure 9F-2. Carter WCFB Rebuild kits: Rebuild Kits. 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. Your friend will receive an email from you with a link to our site. No metering rod gauges are necessary. 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. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. 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. 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. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. 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. 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 can also check the adjustment by measuring (F) which should be 18/64. 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. Put some fluid in theaccelerator pumpwell and press down on the pump. 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. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Contact Us Home Blog FAQ's Technical Help My Account LoginRegister Examples of Carb Numbers search 0$0 Carburetor Parts by Make & Model Scroll to see more Aero Coach Carburetor Parts Alfa Romeo American Bantam American General American LaFrance American Motors Nash Rambler Auburn Audi 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. Two ports act as calibrated air bleeds. Watch this. Fig. 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 The download link will expire in 30 days. Carter WCFB 4 Barrel Carburetor Float System. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Test the needle by holding it down gently with a brass drift punch. Make sure the ball rattles. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Ideas?? In this video I show you how to replace the fast idle spring on the WCFB carburetor. To prevent fuel from being drawn through the pump circuit, the passage to the pump jets is vented by a cross passage to the carburetor bowl above the fuel level. These diagrams include: Fig. The ends of the connector rod should point to the throttle arm side. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. 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. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Measure from center top surface of pontoons to air horn. You may even have to resort to finding a used WCFB carburetor. Share. Technical Details. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Install the pump connector rod (D) in the outer hole, long stroke. 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. Probably around 4- 4.5lbs. Note te larger box, and the number of additional tools from the 1935 set. Notice holes from which linkage rods are removed so they can Ethanol gas does not have much if any lubrication. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. The well should fill with fluid. Good quality print. Hold throttle valve wide open and close choke valve as far as possible without forcing. 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. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. To correct, remove carburetor and turn it upside down. 1955 Chevy Hard starting after flooding. Product information . Be careful removing the intake check retainer. 60 pages of great info. Hold a straight edge across top of dust cover housing, next to the pump arm. Can't find the answer you're looking for? Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly.

Elms Investor Presentation, Articles C