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. As for the pump not squirting.I suspect the pump well isnt filling up. Check any vents to make sure they are open. Refer to the Adjustment Data Table for adjustment dimensions. Good quality print. 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 . 1st check to make sure the fast idle linkage isnt holding the valves open. Adjust by bending float arms, making sure both pontoons on each float are the same height. 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. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. *New Airhorn Gasket7. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. One of the butterflies is open about 1/8 with the carburetor dis assembled. The ends of the connector rod should point to the throttle arm side. Anti-Rust "Dichromate" Finish**4. Make sure the air horn contacts the inner wall of the bowl. Carburetors equipped with an adjustable bowl vent require adjustment. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Watch this. They sometimes need trimming. Add a couple drops of oil to the leather. 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. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Put a straight edge across the dust cover as illustrated. Back out throttle screw so that the throttle valve close completly. DO NOT apply any pressure on the needle. b. 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. Piston force is too much for linkage. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Loosen the clamp screw A Press. Can you help me out? With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Do not depress float lip against spring in needle, but let float rest of its own weight. Metering rods for the WCFB have been out of production for several years now. These diagrams include: Fig. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Solid fuel has the 2 tubes pointing up. It should not be opened up. The mixture screw may be bent, or damaged. Tyler's Forgotten Car Rescue 22,933 views. Carter WCFB 4 Barrel Carburetor Float System. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. 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. The WCFB carburetor which came on some of the earliest The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Place the choke housing toward the left and remove upper right main body to throttle body screw. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). One is in the secondary venturi and the other just above the throttle plate. This allows air instead of fuel to be drawn off the pump jets. *New Accelerator Pump5. Your friend will receive an email from you with a link to our site. *New Float6. 5:04. WCFB carburetors, althqugh basically all units are allke. 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 turn it upside down. Share. Probably around 4- 4.5lbs. Adjust by bending the choke connector rod at lower angle (H). Blowing out passages will not get them clean enough. Ethanol leaves deposits behind that acts like corrosion. This box did not have a part number. There should be a retainer keeping the check ball in place. This restricts the flow of fuel. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 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. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Hold in place and carefully tighten metering rod arm set screw (G). Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. When closing the throttle, the accelerator moves up in the pump well. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Product information . 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. (note) The metering rods will fit into the jets loosely. Use a brass drift punch. Carter WCFB, 4 barrel carburetor manual. If not then clean it and try again. When removing valves they should be marked so that they get put back the same way. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Disassembly2. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. In this video I show you how to replace the fast idle spring on the WCFB carburetor. 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. Ultra-Sonic Cleaning3. BBS) and were basically an on/off condition similar to the function of a power valve. Two ports act as calibrated air bleeds. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. The accelerator pump circuit resides on the primary side of. The file is in PDF format, you can download and save/print a copy. 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. This eliminates any bog or hesitation when acceleration. With carburetor installed and engine warmed up. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. William C. Carter was born in Union City Tennessee in 1884. cm448. Back out throttle lever set screw until throttle valves seat in bores of carburetor. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. If hard starting still exists change the choke setting to one point lean. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. 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 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 (. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). This can be done by looking at the impression on bowl cover gasket. Gasket removed. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Please complete the fields below to send your friend a link to this product. You may even have to resort to finding a used WCFB carburetor. FREE to our customers that buy a rebuild kit. This is an electronic rebuild manual, no physical copy will be provided. 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 Clogged idle tube, or passages in the idle circuit. Test the fuel pump to be sure it isnt putting out too much pressure. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. We will contact you as soon as this product is available. Carter WCFB 4 Barrel Carburetor Float System. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. 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! 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. You should feel some pressure and fluid should not be bypassing the check needle. Float drop not set, or fuel pump pressure too low. Carter WCFB 4 Barrel Carburetor Float System. Seat the discharge check by tapping lightly in the hole to form a good seal. Other than that, great company to deal with. Everyone Has Started an Engine in the . Be careful when removing the top of the carburetor that you don't force things and break the piston lever. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Notice holes from which linkage rods are removed so they can 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 flat on top of the pump arm should be parallel to the straight edge. 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 The piston is brass and can be damaged very easily. Back out throttle stop screw until throttle valves seat in bores. The Carter AFB uses weights, and therefore never goes out of adjustment. 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. Hold throttle valve wide open and close choke valve as far as possible without forcing. Technical Details. Rotate throttle stop screw E until engine idle at approx 500 RPM. Is there a pointed check weight in the main discharge hole. During high speed operation a vacuum exists at the pump jets. 1: Carter WCFB idle mixture and speed adustment screw location. The carburetor will flood. Hold air horn upright with floats hanging. 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. Free shipping for many products! 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. Be careful removing the intake check retainer. Put some fluid in theaccelerator pumpwell and press down on the pump. parts. See figure 9F-2. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. They are not meant to fill the hole, only to restrict it. 2: Carter AFB idle mixture and speed adjustment screws. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Could the float bowl actually be the problem? Can't find the answer you're looking for? Pulloffs : CUFWCFB2 $ 0 . Any bubbles indicates a leak.Make sure the 2 floats are the same height. What Has Been Done to This Carburetor?1. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. 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 Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . 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 . Recheck unloader settings with carburetor on the engine. Watch on. New fuel pumps are especially suspect. Can't find the answer you're looking for? 1955 Chevy Hard starting after flooding. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Make sure the ball rattles. Recheck float adjustments. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Change the choke setting to index. 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). From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. 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 adjustment of the pump is important in order to get the required fuel. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. Be sure these ports are clear. The download link will expire in 30 days. The ends of the connector rod should point to the throttle arm side. 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. On 1956 models one point rich. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn 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. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. You cannot go wrong with Mikes carburetor in any way. Rotate throttle stop screw E until engine idle at approx 500 RPM. On the WCFB the check ball is usually at the bottom of the pump well. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Coat threads of screw with sealing compound and install it. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. 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. Carter WCFB Fast Idle With carburetor installed and engine warmed up. The well should fill with fluid. Fig. *New Main Body Gasket8. Probably not since only one butterfly is open. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. The discharge check is seated at this time to prevent air being drawn into the pump well. The metering rod adjustment should be done after the pump adjustment. Carter WCFB 4 Barrel Carburetor Float System. Make sure there is a check needle below the main discharge. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Adjust by bending lip of float, not float arm. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. 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. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. 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. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Must be made after fast idle adjustment. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Older kits 30-70s. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Adjust idle screws D to produce a smooth idle of correct speed is obtained. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. Any pressure put on the needle will damage it. Back off the idle screw so that the throttle plates close completely. Make sure the air cleaner gasket does not block the bowl vents. 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. Rochester and Carter replacement parts are interchangeable. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. It's highlighted yellow and will look something like this. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. 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). This restricts the flow of fuel. Also make sure one isnt rubbing on the side. Ultra-Sonic Cleaning3. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Measure float height as illustrated above. Take the top off and put the pump in the well all the way to the bottom. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Aspringis inserted in the power piston hole, then the piston. The flat surface of the pump arm should be parallel to the straight edge. Make sure these are clear if you have percolation problems. A WGD usually has a pump arm like that of a WCFB (IIRC). The correct way is to use a fuel pump pressure gauge. The fuel is also conducted through a passage in the air horn to the secondary needle seat. 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). 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. Carter WCFB 4 Barrel Adjust Float. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Blow through the intake check passage to be sure the passage is open. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. 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. Most of the single step rods were steel. Some have a coating to give it a better shelf life. Adjusting the WCFB float level and float drop. Carter WCFB Build Sheets You need to run wire down all small passages. No metering rod gauges are necessary. Gasket removed as shown A. 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. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Examine the viton tip for any marks.Fuel pump pressure could be too high. 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. Carter WCFB, 4 barrel metering rod adjustment instructions. The setups data is the same. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 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 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. 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. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Check the low speed jets to make sure they are clear (#44). It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Ideas?? 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. Some models have a pump relief check in the bottom of the fuel bowl. 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 Carter WCFB Rebuild kits: Rebuild Kits. Measure from toe B to air horn. a. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). To correct, remove carburetor and turn it upside down. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. 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. When I slow down to an idle, my engine runs rough. 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). Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. Correct by removing any burrs or nicks. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. 3: Holley 4150 idle mixture and speed adjustment screws.
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