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Quick test to see if the accelerator pump is working. 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. Technical Details. The correct way is to use a fuel pump pressure gauge. 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. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. A WGD usually has a pump arm like that of a WCFB (IIRC). Also make sure one isnt rubbing on the side. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. The mixture screw may be bent, or damaged. 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. Back out throttle lever set screw until throttle valves seat in bores of carburetor. All late model WCFB carburetors have three different length bowl cover screws. Sometimes scraping around the edges with an awl will remove the staking. parts. Probably not since only one butterfly is open. Ultra-Sonic Cleaning3. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. Carter WCFB, 4 barrel metering rod adjustment instructions. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Rochester and Carter replacement parts are interchangeable. This box did not have a part number. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. The metering rod adjustment should be done after the pump adjustment. 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). 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. Disassembly2. Aspringis inserted in the power piston hole, then the piston. This allows air instead of fuel to be drawn off the pump jets. Someone has installed it improperly. Some models have a pump relief check in the bottom of the fuel bowl. 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. Product information . Metering rods for the WCFB have been out of production for several years now. The adjustment of the pump is important in order to get the required fuel. Watch on. The adjustment of the pump is important in order to get the required fuel. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. Notice holes from which linkage rods are removed so they can 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Make sure manifold heat control valve is free. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Gasket between bowl and base is installed backwards (easy to do). 3: Holley 4150 idle mixture and speed adjustment screws. Carter WCFB 4 Barrel Carburetor Float System. Carter WCFB Specifications - Mikes Carburetor Parts I. DISASSEMBLY. WCFB carburetors, althqugh basically all units are allke. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. *New Airhorn Gasket7. 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? THE CARBURETOR SHOP / Carter carburetor special tools The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. There should be a retainer keeping the check ball in place. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Carter WCFB Archives - Mikes Carburetor Parts Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. 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. 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. The ends of the connector rod should point to the throttle arm side. If not then clean it and try again. When removing valves they should be marked so that they get put back the same way. The well should fill with fluid. THE CARBURETOR SHOP / WCFB and 4-GC floats 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. Adjust by bending unloader lip on throttle shaft lever. Make sure the pontoons are centered and will not rub the bowl sides. 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). *New Main Body Gasket8. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. 1952 Carter WCFBsetting idle - Discussion Forums Carter WCFB 4 Barrel Accelerator Pump Circuit - YouTube 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. These diagrams include: Fig. Share. BBS) and were basically an on/off condition similar to the function of a power valve. Check any vents to make sure they are open. Both valves should be closed. Carter WCFB 4 Barrel Carburetor They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Adjust idle screws D to produce a smooth idle of correct speed is obtained. How to Modify a Carter or Edelbrock Carburetor - Muscle Car DIY 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 1: Carter WCFB idle mixture and speed adustment screw location. 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. It needs about 4 lbs of pressure. a. On 1956 models one point rich. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. Carter WCFB 4 Barrel Adjust Float - YouTube 19591961 Chevrolet Carter WCFB Carburetor 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. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. 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. Seat the discharge check by tapping lightly in the hole to form a good seal. Gasket removed as shown A. To correct, remove carburetor and turn it upside down. Can't find the answer you're looking for? 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. Can't find the answer you're looking for? Carter WCFB 4 Barrel Metering Rod - Mikes Carburetor Parts Float drop not set, or fuel pump pressure too low. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Refer to the Adjustment Data Table for adjustment dimensions. Carter WCFB Build Sheets Adjust by bending float arms, making sure both pontoons on each float are the same height. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. This restricts the flow of fuel. Gasket removed. 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. Pulloffs : CUFWCFB2 $ 0 . Blow air through the main discharge to make sure the passage is clear all the way to the pump well. This can be done by looking at the impression on bowl cover gasket. but if it runs well you don't really need to make any adjustments. DO NOT apply any pressure on the needle. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Each size must be used in its own location. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Coat threads of screw with sealing compound and install it. Enter Carb Number. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Measure float height as illustrated above. Carter WCFB 4 Barrel Carburetor Float System. PDF Parts List Carter Carburetor Model Wcfb At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Put a straight edge across the dust cover as illustrated. The file is in PDF format, you can download and save/print a copy. b. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. This eliminates any bog or hesitation when acceleration. 1956-1957 Chevrolet Carter WCFB Carburetor Hold a straight edge across top of dust cover housing, next to the pump arm. 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. 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. This is an electronic rebuild manual, no physical copy will be provided. Make sure the pump relief check is clean. 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 (. 60 pages of great info. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Install the pump connector rod (D) in the outer hole, long stroke. cm448. Can't find the answer you're looking for. Carter WCFB 4 Barrel Adjust Float. Carter WCFB, 4 barrel carburetor manual. Did the old gasket get removed? Ethanol gas does not have much if any lubrication. Check throttle linkage to make sure that primary throttle valves come to full wide open position. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Carter WGD Adjustments - Mikes Carburetor Parts 19571958 Plymouth Fury Carter WCFB Carburetor *Remanufactured | eBay If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. Measure from toe B to air horn. 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. WCFB 4 Barrel Carburetor Float Adjustment Make sure the ball rattles. One is in the secondary venturi and the other just above the throttle plate. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Fast, secure e-book download. Rotate throttle stop screw E until engine idle at approx 500 RPM. Blow through the intake check passage to be sure the passage is open. Measure from center top surface of pontoons to air horn. Carter WCFB Metering Rods - YouTube 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. You should feel some pressure and fluid should not be bypassing the check needle. The fuel is also conducted through a passage in the air horn to the secondary needle seat. You may even have to resort to finding a used WCFB carburetor. The flat surface of the pump arm should be parallel to the straight edge. Recheck unloader settings with carburetor on the engine. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Carter WCFB 4 Barrel Carburetor Float System. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. New fuel pumps are especially suspect. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. The piston is brass and can be damaged very easily. The setups data is the same. 2: Carter AFB idle mixture and speed adjustment screws. Change the choke setting to index. However, it is very similar and I found it very useful. Some have a coating to give it a better shelf life. On the WCFB the check ball is usually at the bottom of the pump well. 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. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Low fuel pump pressure always check you motors manual for the correct pressure. Two ports act as calibrated air bleeds. They are not meant to fill the hole, only to restrict it. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Outside top of early Carter tool box with correct decal. WCFB Carburetor Cutting Out on Left Hand Turn. The flat on top of the pump arm should be parallel to the straight edge. When replacing them hold them tight against the wall while tightening the screw. 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. Carter WCFB Metering Rods - carburetor-parts.com Make sure these are clear if you have percolation problems. It's highlighted yellow and will look something like this. 5:04. Can you help me out? They work fine when I push hard down on the piston. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Blowing out passages will not get them clean enough. 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. Home - Carburetor Manual Ebooks Adjust idle screws D to produce a smooth idle of correct speed is obtained. Examine the viton tip for any marks.Fuel pump pressure could be too high. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. 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 I have repeated multiple times with same results. Adjust by bending lip of float, not float arm. 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 We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Carter Metering Rod Technology - THE CARBURETOR SHOP 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Carter 2 Barrel BBD Adjustments - YouTube Make sure the air horn contacts the inner wall of the bowl. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Press down on vacuum piston link C until metering rods bottom in the carburetor body. Carter WCFB Carburetor Manual - Mike's Carburetor Parts Carter WCFB 4 Barrel Carburetor Float System