carter wcfb carburetor adjustment carter wcfb carburetor adjustment

The piston is brass and can be damaged very easily. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. 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. I. DISASSEMBLY. Each size must be used in its own location. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Ultra-Sonic Cleaning3. Adjust by bending the choke connector rod at lower angle (H). Some have a coating to give it a better shelf life. Hold air horn upside down with floats in place and gasket removed. *New Float6. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. To correct, remove carburetor and turn it upside down. They are not meant to fill the hole, only to restrict it. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Gasket removed. With carburetor installed and engine warmed up. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . 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). You need to run wire down all small passages. Ideas?? Float drop not set, or fuel pump pressure too low. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Free shipping for many products! Then close throttle. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. With mineral spirits in the float bowl, Raise the pump. 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. The Carter AFB uses weights, and therefore never goes out of adjustment. Can't find the answer you're looking for. Gasket removed as shown A. Coat threads of screw with sealing compound and install it. You may even have to resort to finding a used WCFB carburetor. Install the pump connector rod (D) in the outer hole, long stroke. Carter WCFB, 4 barrel metering rod adjustment instructions. Fast, secure e-book download. Watch on. 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. 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. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. When removing valves they should be marked so that they get put back the same way. Rotate throttle stop screw E until engine idle at approx 500 RPM. 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. Do not depress float lip against spring in needle, but let float rest of its own weight. Pulloffs : CUFWCFB2 $ 0 . Make sure the air cleaner gasket does not block the bowl vents. 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 . Make sure manifold heat control valve is free. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Loosen the clamp screw A Press. 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. Adjust by bending throttle connector rod at deepest angle as shown. 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. 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. A WGD usually has a pump arm like that of a WCFB (IIRC). The well should fill with fluid. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Your friend will receive an email from you with a link to our site. If not then clean it and try again. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Adjust by bending arm (J) on choke trip lever. Seat the intake check by tapping lightly in the hole to form a good seal. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Some models have a pump relief check in the bottom of the fuel bowl. Make sure these are clear if you have percolation problems. Hold a straight edge across top of dust cover housing, next to the pump arm. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Recheck float adjustments. Carter WCFB 4 Barrel Carburetor Float System. Refer to the Adjustment Data Table for adjustment dimensions. Carburetors equipped with an adjustable bowl vent require adjustment. Back out throttle screw so that the throttle valve close completly. Rochester and Carter replacement parts are interchangeable. Test the fuel pump to be sure it isnt putting out too much pressure. Place the choke housing toward the left and remove upper right main body to throttle body screw. Sometimes scraping around the edges with an awl will remove the staking. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Share. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Be sure these ports are clear. Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. 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). Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. If a loss of rpm is noted, or if the engine dies, and air leak exists. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. The single step rods were used on some of the price leader carburetors (i.e. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. 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. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. When that is the case, I bend the accel. 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. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. When done you should see very little daylight around the valve. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Do not depress float lip against spring in needle, but let float rest of its own weight. 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 metering rod adjustment should be done after the pump adjustment. Ultra-Sonic Cleaning3. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Adjust by bending throttle connector rod at upper angle (B). Put a straight edge across the dust cover as illustrated. Metering rods for the WCFB have been out of production for several years now. 1st check to make sure the fast idle linkage isnt holding the valves open. The download link will expire in 30 days. What Has Been Done to This Carburetor?1. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Older kits 30-70s. Measure from toe B to air horn. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Ethanol gas does not have much if any lubrication. 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. Probably around 4- 4.5lbs. All These Part Numbers Interchange Into Our Part No. Technical Details. When I slow down to an idle, my engine runs rough. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Did the old gasket get removed? Solid fuel has the 2 tubes pointing up. Two ports act as calibrated air bleeds. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Other than that, great company to deal with. However, it is very similar and I found it very useful. It's highlighted yellow and will look something like this. Can you help me out? Note te larger box, and the number of additional tools from the 1935 set. Recheck unloader settings with carburetor on the engine. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 3: Holley 4150 idle mixture and speed adjustment screws. 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. but if it runs well you don't really need to make any adjustments. As for the pump not squirting.I suspect the pump well isnt filling up. 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. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. On 1956 models one point rich. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Notice holes from which linkage rods are removed so they can 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 the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. The WCFB carburetor which came on some of the earliest Disassembly2. When replacing them hold them tight against the wall while tightening the screw. 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. Enter Carb Number. There should be a retainer keeping the check ball in place. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. The accelerator pump circuit resides on the primary side of. New fuel pumps are especially suspect. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. They work fine when I push hard down on the piston. I have repeated multiple times with same results. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. 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. Measure float height as illustrated above. 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. When closing the throttle, the accelerator moves up in the pump well. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. 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 The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Take the top off and put the pump in the well all the way to the bottom. Seat the discharge check by tapping lightly in the hole to form a good seal. Be careful removing the intake check retainer. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Can't find the answer you're looking for? With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Most of the single step rods were steel. 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 At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. They are staked in the hole. 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. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. 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). Put some fluid in theaccelerator pumpwell and press down on the pump. All late model WCFB carburetors have three different length bowl cover screws. 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. 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. 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. Test the floats in hot water and if you get any bubbles then they are leaking. The correct way is to use a fuel pump pressure gauge. 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 The mixture screw may be bent, or damaged. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. 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. 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. Can't find the answer you're looking for? Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). With throttle valves seated in bores, dust cover and gasket in place. You cannot go wrong with Mikes carburetor in any way. Air Bled has the venturi tube pointing down into the bore. It should not be opened up. 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. If hard starting still exists change the choke setting to one point lean. Hold in place and carefully tighten metering rod arm set screw (G). This is an electronic rebuild manual, no physical copy will be provided. Someone has installed it improperly. Adjust by bending float arms, making sure both pontoons on each float are the same height. What more could you ask for? Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. See figure 9F-2. Coat threads of screw with sealing compound and install it. 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 Adjust by bending lip of float, not float arm. WCFB Carburetor Cutting Out on Left Hand Turn. Gasket between bowl and base is installed backwards (easy to do). This eliminates any bog or hesitation when acceleration. During high speed operation a vacuum exists at the pump jets. Low fuel pump pressure always check you motors manual for the correct pressure. Adjust idle screws D to produce a smooth idle of correct speed is obtained. 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. The accelerator pump circuit resides on the primary side of this carburetor. You can also check the adjustment by measuring (F) which should be 18/64.