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 (. Piston force is too much for linkage. Carter WCFB Rebuild kits: Rebuild Kits. Notice holes from which linkage rods are removed so they can It needs about 4 lbs of pressure. There should be a retainer keeping the check ball in place. 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. Your friend will receive an email from you with a link to our site. Other than that, great company to deal with. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. This is an electronic rebuild manual, no physical copy will be provided. Float drop not set, or fuel pump pressure too low. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Coat threads of screw with sealing compound and install it. 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. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. 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. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. Then close throttle. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. 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. Enter Carb Number. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Carter WCFB, 4 barrel metering rod adjustment instructions. Everyone Has Started an Engine in the . Carburetors equipped with an adjustable bowl vent require adjustment. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Adjust by bending the connector rod at the lower bend (E). Adjust by bending throttle connector rod at deepest angle as shown. When done you should see very little daylight around the valve. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Recheck float adjustments. 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. Be careful removing the intake check retainer. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. 1955 Chevy Hard starting after flooding. 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. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Secondarys are somehow stuck open (which amounts to a vacuum leak). This can be done by looking at the impression on bowl cover gasket. This restricts the flow of fuel. 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). The discharge check is seated at this time to prevent air being drawn into the pump well. Fig. Can you help me out? The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. DO NOT apply any pressure on the needle. When closing the throttle, the accelerator moves up in the pump well. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. 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. a. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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 This box did not have a part number. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. 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. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. 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. Coat threads of screw with sealing compound and install it. 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 accelerator pump circuit resides on the primary side of this carburetor. 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? Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. 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 Loosen the clamp screw A Press. Correct by removing any burrs or nicks. Gasket removed as shown A. Test the fuel pump to be sure it isnt putting out too much pressure. Carter WCFB 4 Barrel Carburetor Float System. This restricts the flow of fuel. Though fuel float bowl full, cant get gas into the accelerator pump chamber of the carb. 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. 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 . Make sure the air cleaner gasket does not block the bowl vents. Technical Details. 1st check to make sure the fast idle linkage isnt holding the valves open. Blowing out passages will not get them clean enough. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . 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. The file is in PDF format, you can download and save/print a copy. 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. 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. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. The accelerator pump circuit resides on the primary side of. Seat the intake 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. Put a straight edge across the dust cover as illustrated. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. During high speed operation a vacuum exists at the pump jets. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. 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. Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. I rebuilt a Carter WCFB carburetor with the lower auto choke setup. When I slow down to an idle, my engine runs rough. What Has Been Done to This Carburetor?1. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Install the pump connector rod (D) in the outer hole, long stroke. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Fast, secure e-book download. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. 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). This allows air instead of fuel to be drawn off the pump jets. Once engine speed gets high enough, the carburetor vacuum is strong enough to pull fuel through the main jet and the accelerator pump circuit is no longer used. Make sure the pump relief check is clean. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. 1: Carter WCFB idle mixture and speed adustment screw location. Can't find the answer you're looking for. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Low fuel pump pressure always check you motors manual for the correct pressure. 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 Disassembly2. Carter WCFB 4 Barrel Carburetor Float System. Carter WCFB Build Sheets On the WCFB the check ball is usually at the bottom of the pump well. 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. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Note te larger box, and the number of additional tools from the 1935 set. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Make sure the air horn contacts the inner wall of the bowl. Carter WCFB, 4 barrel carburetor manual. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. William C. Carter was born in Union City Tennessee in 1884.
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