There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Please complete the fields below to send your friend a link to this product. 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. We will contact you as soon as this product is available. Coat threads of screw with sealing compound and install it. Can't find the answer you're looking for? 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 During high speed operation a vacuum exists at the pump jets. WCFB carburetors, althqugh basically all units are allke. Measure from center top surface of pontoons to air horn. When I slow down to an idle, my engine runs rough. To correct, remove carburetor and turn it upside down. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. 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. There should be a retainer keeping the check ball in place. Solid fuel has the 2 tubes pointing up. 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 . Do not depress float lip against spring in needle, but let float rest of its own weight. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Make sure the pump relief check is clean. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. 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. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. 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 Carter AFB uses weights, and therefore never goes out of adjustment. 1955 Pontiac - Loading or Carburetor Flooding Carter WCFB, 4 barrel metering rod adjustment instructions. The carburetor will flood. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. (note) The metering rods will fit into the jets loosely. Adjust idle screws D to produce a smooth idle of correct speed is obtained. 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. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Measure float height as illustrated above. Loosen the clamp screw A Press. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. 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. In this video I show you how to replace the fast idle spring on the WCFB carburetor. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. 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. 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 Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . When closing the throttle, the accelerator moves up in the pump well. Make sure manifold heat control valve is free. Gasket between bowl and base is installed backwards (easy to do). Piston force is too much for linkage. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Quick test to see if the accelerator pump is working. 1st check to make sure the fast idle linkage isnt holding the valves open. This box did not have a part number. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). DO NOT apply any pressure on the needle. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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. Check throttle linkage to make sure that primary throttle valves come to full wide open position. They sometimes need trimming. 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. Press down on vacuum piston link C until metering rods bottom in the carburetor body. It needs about 4 lbs of pressure. 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. Can you help me out? 1955 Chevy Hard starting after flooding. Check the low speed jets to make sure they are clear (#44). Fig. Use a brass drift punch. 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. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Two ports act as calibrated air bleeds. If not, then find the check ball and make sure it is loose. Some models have a pump relief check in the bottom of the fuel bowl. Ultra-Sonic Cleaning3. 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 off the idle screw so that the throttle plates close completely. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. 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 The WCFB carburetor which came on some of the earliest One of the butterflies is open about 1/8 with the carburetor dis assembled. 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. Product information . Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. Ethanol gas does not have much if any lubrication. 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. Do not depress float lip against spring in needle, but let float rest of its own weight. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. 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. To correct, remove carburetor and turn it upside down. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. All late model WCFB carburetors have three different length bowl cover screws. With throttle valves seated in bores, dust cover and gasket in place. Must be made after fast idle adjustment. 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. Probably not since only one butterfly is open. Adjust by bending throttle connector rod at upper angle (B). Be careful removing the intake check retainer. 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. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. 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 fuel pump to be sure it isnt putting out too much pressure. 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. Everyone Has Started an Engine in the . With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Sometimes scraping around the edges with an awl will remove the staking. 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 Build Sheets The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Can't find the answer you're looking for? Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Kit looked complete but I ordered the wrong one based on the pump and of course with it being opened, it cannot be returned. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Ultra-Sonic Cleaning3. If hard starting still exists change the choke setting to one point lean. Refer to the Adjustment Data Table for adjustment dimensions. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Gasket removed. 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. Rochester and Carter replacement parts are interchangeable. Examine the viton tip for any marks.Fuel pump pressure could be too high. Carter WCFB 4 Barrel Carburetor Float System. The flat on top of the pump arm should be parallel to the straight edge. On the WCFB the check ball is usually at the bottom of the pump well. The correct way is to use a fuel pump pressure gauge. 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 cm448. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. 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. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. Older kits 30-70s. The fuel is also conducted through a passage in the air horn to the secondary needle seat. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. They are not meant to fill the hole, only to restrict it. When removing valves they should be marked so that they get put back the same way. When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Other than that, great company to deal with. Hold air horn upright with floats hanging. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. You need to run wire down all small passages. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Back out throttle stop screw until throttle valves seat in bores. 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.
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