carter wcfb carburetor adjustment carter wcfb carburetor adjustment

Quick test to see if the accelerator pump is working. 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. Hold in place and carefully tighten metering rod arm set screw (G). Make sure the air horn contacts the inner wall of the bowl. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Aspringis inserted in the power piston hole, then the piston. Note te larger box, and the number of additional tools from the 1935 set. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Back out throttle screw so that the throttle valve close completly. The single step rods were used on some of the price leader carburetors (i.e. If not then clean it and try again. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Share. Put a straight edge across the dust cover as illustrated. New fuel pumps are especially suspect. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Is there a pointed check weight in the main discharge hole. Examine the viton tip for any marks.Fuel pump pressure could be too high. Make sure the air cleaner gasket does not block the bowl vents. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Can't find the answer you're looking for? 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 . With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. 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 . They know their stuff and provide technical assistance and guides in both paper and video formats. Also make sure one isnt rubbing on the side. This box did not have a part number. This allows air instead of fuel to be drawn off the pump jets. Ethanol leaves deposits behind that acts like corrosion. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Adjust by bending the connector rod at the lower bend (E). Adjust by bending arm (J) on choke trip lever. but if it runs well you don't really need to make any adjustments. 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. Can you help me out? pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). When that is the case, I bend the accel. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Carter WCFB Rebuild kits: Rebuild Kits. Enter Carb Number. 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. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. Rotate throttle stop screw E until engine idle at approx 500 RPM. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. With carburetor installed and engine warmed up. Recheck float adjustments. Make sure manifold heat control valve is free. Adjust idle screws D to produce a smooth idle of correct speed is obtained. All late model WCFB carburetors have three different length bowl cover screws. Carter WCFB 4 Barrel Carburetor Float System. The ends of the connector rod should point to the throttle arm side. Carter WCFB 4 Barrel Adjust Float. Can't find the answer you're looking for. 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. Adjust by bending float arms, making sure both pontoons on each float are the same height. 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? a. Both valves should be closed. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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. *New Airhorn Gasket7. Coat threads of screw with sealing compound and install it. Place the choke housing toward the left and remove upper right main body to throttle body screw. *New Accelerator Pump5. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . BBS) and were basically an on/off condition similar to the function of a power valve. Blow through the intake check passage to be sure the passage is open. 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. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. 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. Test the fuel pump to be sure it isnt putting out too much pressure. Two ports act as calibrated air bleeds. Test the needle by holding it down gently with a brass drift punch. There should be a retainer keeping the check ball in place. Piston force is too much for linkage. 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. Press down on vacuum piston link C until metering rods bottom in the carburetor body. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. 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. Can't find the answer you're looking for? 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. Anti-Rust "Dichromate" Finish**4. They work fine when I push hard down on the piston. Back out throttle stop screw until throttle valves seat in bores. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. 1955 Chevy Hard starting after flooding. The Carter AFB uses weights, and therefore never goes out of adjustment. Some models have a pump relief check in the bottom of the fuel bowl. You are flooding (getting too much gas in the float bowl), caused by these types of problems. The adjustment of the pump is important in order to get the required fuel. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. DISASSEMBLY. Loosen the clamp screw A Press. Clogged idle tube, or passages in the idle circuit. Watch this. Install the pump connector rod (D) in the outer hole, long stroke. 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. Most of the single step rods were steel. Outside top of early Carter tool box with correct decal. These diagrams include: Fig. When closing the throttle, the accelerator moves up in the pump well. Measure from toe B to air horn. This is an electronic rebuild manual, no physical copy will be provided. Fast, secure e-book download. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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). 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. 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. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. I have repeated multiple times with same results. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. We will contact you as soon as this product is available. Rochester and Carter replacement parts are interchangeable. Ideas?? 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 To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Air Bled has the venturi tube pointing down into the bore. Any pressure put on the needle will damage it. Adjust idle screws D to produce a smooth idle of correct speed is obtained. 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. It needs about 4 lbs of pressure. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. parts. Check the low speed jets to make sure they are clear (#44). Disassembly2. 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. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. Can't find the answer you're looking for? You can also check the adjustment by measuring (F) which should be 18/64. The well should fill with fluid. However, it is very similar and I found it very useful. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. (note) The metering rods will fit into the jets loosely. 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 (. Carter WCFB 4 Barrel Carburetor Float System. 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. Secondarys are somehow stuck open (which amounts to a vacuum leak). This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Rotate throttle stop screw E until engine idle at approx 500 RPM. What more could you ask for? Check throttle linkage to make sure that primary throttle valves come to full wide open position. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. To correct, remove carburetor and turn it upside down. The flat on top of the pump arm should be parallel to the straight edge. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Coat threads of screw with sealing compound and install it. They sometimes need trimming. Ethanol gas does not have much if any lubrication. Be careful removing the intake check retainer. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. 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). FREE to our customers that buy a rebuild kit. The ends of the connector rod should point to the throttle arm side. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Please complete the fields below to send your friend a link to this product. *New Float6. Adjust by bending the choke connector rod at lower angle (H). If hard starting still exists change the choke setting to one point lean. 3: Holley 4150 idle mixture and speed adjustment screws. Make sure the pontoons are centered and will not rub the bowl sides. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Watch on. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. 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. Seat the intake check by tapping lightly in the hole to form a good seal. Change the choke setting to index. Hold a straight edge across top of dust cover housing, next to the pump arm. Install the pump connector rod (D) in the outer hole, long stroke. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. The WCFB carburetor which came on some of the earliest Make sure the ball rattles. WCFB Carburetor Cutting Out on Left Hand Turn. 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 Technical Details. Tyler's Forgotten Car Rescue 22,933 views. Can't find the answer you're looking for? Notice holes from which linkage rods are removed so they can Older kits 30-70s. Blowing out passages will not get them clean enough. Recheck unloader settings with carburetor on the engine. When replacing them hold them tight against the wall while tightening the screw. DO NOT apply any pressure on the needle. 1955 Pontiac - Loading or Carburetor Flooding He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Adjust by bending unloader lip on throttle shaft lever. 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. Carter WCFB Build Sheets 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. 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. Carburetors equipped with an adjustable bowl vent require adjustment. Then close throttle. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Can't find the answer you're looking for? I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. You cannot go wrong with Mikes carburetor in any way. Measure from center top surface of pontoons to air horn. They are not meant to fill the hole, only to restrict it. The mixture screw may be bent, or damaged. 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 Everyone Has Started an Engine in the . Hold throttle valve wide open and close choke valve as far as possible without forcing. The carburetor will flood. Test the floats in hot water and if you get any bubbles then they are leaking. 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. Disassembly2. Make sure these are clear if you have percolation problems. Ultra-Sonic Cleaning3. This is percolation. This can be done by looking at the impression on bowl cover gasket. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. 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 used metering rods with a single step, 2-step, 3-step, and 4-step. 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 Use a brass drift punch. 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. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. A WGD usually has a pump arm like that of a WCFB (IIRC). Could the float bowl actually be the problem? On the WCFB the check ball is usually at the bottom of the pump well. Pulloffs : CUFWCFB2 $ 0 . We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. The accelerator pump circuit resides on the primary side of. 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. 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. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. Did the old gasket get removed? The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Some have a coating to give it a better shelf life. Good quality print. 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. Your friend will receive an email from you with a link to our site. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Ultra-Sonic Cleaning3. This check prevents excessive pressure in the discharge passage during acceleration. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Take the top off and put the pump in the well all the way to the bottom. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. This restricts the flow of fuel. This eliminates any bog or hesitation when acceleration. 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. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. 5:04. Put some fluid in theaccelerator pumpwell and press down on the pump. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. 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. 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. Correct by removing any burrs or nicks. One is in the secondary venturi and the other just above the throttle plate. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Check any vents to make sure they are open. Back out throttle lever set screw until throttle valves seat in bores of carburetor. Product information . Gasket removed as shown A. 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! Probably around 4- 4.5lbs. 1: Carter WCFB idle mixture and speed adustment screw location. 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. 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 . The fuel is also conducted through a passage in the air horn to the secondary needle seat. Free shipping for many products! Other than that, great company to deal with. You may even have to resort to finding a used WCFB carburetor. Add a couple drops of oil to the leather. As for the pump not squirting.I suspect the pump well isnt filling up. To correct, remove carburetor and turn it upside down. The setups data is the same. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. 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). 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. The accelerator pump circuit resides on the primary side of this carburetor. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. 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. The discharge check is seated at this time to prevent air being drawn into the pump well. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. All These Part Numbers Interchange Into Our Part No. 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. Gasket between bowl and base is installed backwards (easy to do). Run a blunt object around the inside of the leather cup to make sure any coating is broken. Probably not since only one butterfly is open. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Do not depress float lip against spring in needle, but let float rest of its own weight. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure.