carter wcfb carburetor adjustment carter wcfb carburetor adjustment

Coat threads of screw with sealing compound and install it. What Has Been Done to This Carburetor?1. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. If a loss of rpm is noted, or if the engine dies, and air leak exists. Adjust by bending throttle connector rod at deepest angle as shown. Aspringis inserted in the power piston hole, then the piston. 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. Blowing out passages will not get them clean enough. 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). I. DISASSEMBLY. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Fig. Seat the discharge check by tapping lightly in the hole to form a good seal. One is in the secondary venturi and the other just above the throttle plate. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Adjust by bending lip of float, not float arm. 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 . This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Use a brass drift punch. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. Air Bled has the venturi tube pointing down into the bore. Check the low speed jets to make sure they are clear (#44). See figure 9F-2. Seat the intake check by tapping lightly in the hole to form a good seal. Some models have a pump relief check in the bottom of the fuel bowl. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Then close throttle. What more could you ask for? 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. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 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. 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. Test the floats in hot water and if you get any bubbles then they are leaking. The accelerator pump circuit resides on the primary side of this carburetor. 1: Carter WCFB idle mixture and speed adustment screw location. Carter WCFB 4 Barrel Adjust Float. You can also check the adjustment by measuring (F) which should be 18/64. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Could the float bowl actually be the problem? A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. 60 pages of great info. Put a straight edge across the dust cover as illustrated. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. *New Accelerator Pump5. 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 This eliminates any bog or hesitation when acceleration. This box did not have a part number. 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. They are staked in the hole. Product information . Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Ethanol leaves deposits behind that acts like corrosion. but if it runs well you don't really need to make any adjustments. Back out throttle screw so that the throttle valve close completly. Carter WCFB 4 Barrel Carburetor Float System. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. There should be a retainer keeping the check ball in place. With carburetor installed and engine warmed up. 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. You may even have to resort to finding a used WCFB carburetor. The discharge check is seated at this time to prevent air being drawn into the pump well. The carburetor will flood. 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. Measure from toe B to air horn. We will contact you as soon as this product is available. Other than that, great company to deal with. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. 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 item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Ideas?? 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. Recheck unloader settings with carburetor on the engine. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). 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. Is there a pointed check weight in the main discharge hole. They sometimes need trimming. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. 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 . I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Can't find the answer you're looking for? 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). 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 (. 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). Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). On 1956 models one point rich. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. No metering rod gauges are necessary. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). Technical Details. 5:04. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 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. Adjust by bending the connector rod at the lower bend (E). Gasket between bowl and base is installed backwards (easy to do). Blow through the intake check passage to be sure the passage is open. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. 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 . This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. 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. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. As for the pump not squirting.I suspect the pump well isnt filling up. New fuel pumps are especially suspect. Test the fuel pump to be sure it isnt putting out too much pressure. Adjust by bending unloader lip on throttle shaft lever. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Can't find the answer you're looking for? Back out throttle stop screw until throttle valves seat in bores. Can't find the answer you're looking for? Probably around 4- 4.5lbs. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Be sure these ports are clear. 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 mixture screw may be bent, or damaged. 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. Float drop not set, or fuel pump pressure too low. 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. Quick test to see if the accelerator pump is working. 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. This can be done by looking at the impression on bowl cover gasket. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. 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! 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. 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 The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. 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. b. 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? One of the butterflies is open about 1/8 with the carburetor dis assembled. Free shipping for many products! 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. If hard starting still exists change the choke setting to one point lean. This allows air instead of fuel to be drawn off the pump jets. 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. Place the choke housing toward the left and remove upper right main body to throttle body screw. Run a blunt object around the inside of the leather cup to make sure any coating is broken. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 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. 1955 Chevy Hard starting after flooding. 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. parts. It needs about 4 lbs of pressure. Enter Carb Number. 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. 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. Any pressure put on the needle will damage it. 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 Place the choke housing toward the left and remove upper right main body to throttle body screw. *New Airhorn Gasket7. Clogged idle tube, or passages in the idle circuit. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. Make sure these are clear if you have percolation problems. When closing the throttle, the accelerator moves up in the pump well. Ethanol gas does not have much if any lubrication. Install the pump connector rod (D) in the outer hole, long stroke. All late model WCFB carburetors have three different length bowl cover screws. Rochester and Carter replacement parts are interchangeable. Watch this. 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. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Low fuel pump pressure always check you motors manual for the correct pressure. Back out throttle lever set screw until throttle valves seat in bores of carburetor. 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. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. Make sure the pump relief check is clean. 1st check to make sure the fast idle linkage isnt holding the valves open. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Be careful removing the intake check retainer. When that is the case, I bend the accel. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. William C. Carter was born in Union City Tennessee in 1884. Your friend will receive an email from you with a link to our site. 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. Can't find the answer you're looking for? Carter WCFB Fast Idle With carburetor installed and engine warmed up. 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. They know their stuff and provide technical assistance and guides in both paper and video formats. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. This restricts the flow of fuel. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Make sure the air horn contacts the inner wall of the bowl. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Most of the single step rods were steel. a. Adjust by bending arm (J) on choke trip lever. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. They work fine when I push hard down on the piston. Ultra-Sonic Cleaning3. Carter WCFB, 4 barrel carburetor manual. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Rotate throttle stop screw E until engine idle at approx 500 RPM. Adjust idle screws D to produce a smooth idle of correct speed is obtained. 2: Carter AFB idle mixture and speed adjustment screws. Correct by removing any burrs or nicks. The fuel is also conducted through a passage in the air horn to the secondary needle seat.