With mineral spirits in the float bowl, Raise the pump. 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 flat on top of the pump arm should be parallel to the straight edge. One is in the secondary venturi and the other just above the throttle plate. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. 1955 Chevy Hard starting after flooding. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Carter WCFB Build Sheets If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. Test the fuel pump to be sure it isnt putting out too much pressure. See figure 9F-2. 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. Ethanol leaves deposits behind that acts like corrosion. 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). Hold air horn upright with floats hanging. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. 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. Can you help me out? You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. Install the pump connector rod (D) in the outer hole, long stroke. William C. Carter was born in Union City Tennessee in 1884. 60 pages of great info. This is an electronic rebuild manual, no physical copy will be provided. cm448. With carburetor installed and engine warmed up. 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. To correct, remove carburetor and turn it upside down. Gasket removed. Carburetors equipped with an adjustable bowl vent require adjustment. Fig. Examine the viton tip for any marks.Fuel pump pressure could be too high. This allows air instead of fuel to be drawn off the pump jets. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. This box did not have a part number. 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 . The download link can be found on your order confirmation email which you will receive as soon as you complete the order. What more could you ask for? 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. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. Adjust by bending throttle connector rod at deepest angle as shown. Secondarys are somehow stuck open (which amounts to a vacuum leak). Aspringis inserted in the power piston hole, then the piston. Make sure the pump relief check is clean. The ends of the connector rod should point to the throttle arm side. As for the pump not squirting.I suspect the pump well isnt filling up. Other than that, great company to deal with. The accelerator pump circuit resides on the primary side of this carburetor. intro Carter WCFB 4 Barrel Carburetor Rebuild Mikes Carburetor 21.5K subscribers Subscribe 51 Share 3.1K views 9 months ago Disassemble & assemble your Carter WCFB 4 barrel. When replacing them hold them tight against the wall while tightening the screw. a. Could the float bowl actually be the problem? 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. 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. Free shipping for many products! Float drop not set, or fuel pump pressure too low. *New Accelerator Pump5. *New Airhorn Gasket7. Check any vents to make sure they are open. *New Main Body Gasket8. If a loss of rpm is noted, or if the engine dies, and air leak exists. I. DISASSEMBLY. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Do not depress float lip against spring in needle, but let float rest of its own weight. Ultra-Sonic Cleaning3. On 1956 models one point rich. Solid fuel has the 2 tubes pointing up. The adjustment of the pump is important in order to get the required fuel. Seat the intake check by tapping lightly in the hole to form a good seal. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. On the WCFB the check ball is usually at the bottom of the pump well. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). In this video I show you how to replace the fast idle spring on the WCFB carburetor. Rotate throttle stop screw E until engine idle at approx 500 RPM. The file is in PDF format, you can download and save/print a copy. It's highlighted yellow and will look something like this. Fig. Enter Carb Number. The Carter AFB uses weights, and therefore never goes out of adjustment. The fuel is also conducted through a passage in the air horn to the secondary needle seat. This restricts the flow of fuel. Coat threads of screw with sealing compound and install it. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . However, it is very similar and I found it very useful. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Someone has installed it improperly. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Also make sure one isnt rubbing on the side. Both valves should be closed. 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 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. One of the butterflies is open about 1/8 with the carburetor dis assembled. (note) The metering rods will fit into the jets loosely. Must be made after fast idle adjustment. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. 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. *New Float6. WCFB Carburetor Cutting Out on Left Hand Turn. The single step rods were used on some of the price leader carburetors (i.e. Measure float height as illustrated above. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. They are staked in the hole. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. 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. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. When done you should see very little daylight around the valve. New fuel pumps are especially suspect. If not, then find the check ball and make sure it is loose. Gasket removed as shown A. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. It needs about 4 lbs of pressure. 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. parts. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. 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. Adjust by bending lip of float, not float arm. Back off the idle screw so that the throttle plates close completely. 1955 Pontiac - Loading or Carburetor Flooding 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. When closing the throttle, the accelerator moves up in the pump well. Your friend will receive an email from you with a link to our site. This is percolation. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Gasket between bowl and base is installed backwards (easy to do). 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. Measure from toe B to air horn. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Change the choke setting to index. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Watch on. Be sure these ports are clear. 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 With throttle valves seated in bores, dust cover and gasket in place. This is an electronic rebuild manual, no physical copy will be provided. Sometimes scraping around the edges with an awl will remove the staking. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Blowing out passages will not get them clean enough. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Hold throttle valve wide open and close choke valve as far as possible without forcing. 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). 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 (. WCFB carburetors, althqugh basically all units are allke. Place the choke housing toward the left and remove upper right main body to throttle body screw. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. Back out throttle screw so that the throttle valve close completly. Carter WCFB 4 Barrel Adjust Float. 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). To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. 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). Everyone Has Started an Engine in the . If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Notice holes from which linkage rods are removed so they can 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 . Loosen the clamp screw A Press. Probably around 4- 4.5lbs. Check the low speed jets to make sure they are clear (#44). The download link will expire in 30 days. Good quality print. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Adjusting the WCFB float level and float drop. FREE to our customers that buy a rebuild kit. Carter WCFB 4 Barrel Carburetor Float System. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. The mixture screw may be bent, or damaged. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Do not depress float lip against spring in needle, but let float rest of its own weight. 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. Each size must be used in its own location. Carter WCFB Carburetor E-Manual Download eWCFB, The file is in PDF format, you can download and save/print a copy, FREE to our customers that buy a rebuild kit. Test the floats in hot water and if you get any bubbles then they are leaking. Ideas?? When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Most of the single step rods were steel. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. 5:04. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Technical Details. You need to run wire down all small passages. BBS) and were basically an on/off condition similar to the function of a power valve. 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. Adjust by bending float arms, making sure both pontoons on each float are the same height. They sometimes need trimming. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. The setups data is the same. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Make sure the ball rattles. 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. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. Air Bled has the venturi tube pointing down into the bore. The correct way is to use a fuel pump pressure gauge. Hold in place and carefully tighten metering rod arm set screw (G). 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. Share. 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. 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 Carter WCFB Rebuild kits: Rebuild Kits. 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. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. 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). Back out throttle stop screw until throttle valves seat in bores. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Pulloffs : CUFWCFB2 $ 0 . 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. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. DO NOT apply any pressure on the needle. You can also check the adjustment by measuring (F) which should be 18/64. Coat threads of screw with sealing compound and install it. Put a straight edge across the dust cover as illustrated. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Disassembly2. Any pressure put on the needle will damage it. Adjust by bending lip of float, not float arm. Some have a coating to give it a better shelf life. Adjust by bending throttle connector rod at upper angle (B). The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. We will contact you as soon as this product is available. 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
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