To correct, remove carburetor and turn it upside down. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Secondarys are somehow stuck open (which amounts to a vacuum leak). Take the top off and put the pump in the well all the way to the bottom. Refer to the Adjustment Data Table for adjustment dimensions. 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. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Ethanol gas does not have much if any lubrication. Carter WCFB Specifications - Mikes Carburetor Parts This is an electronic rebuild manual, no physical copy will be provided. Two ports act as calibrated air bleeds. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. 2: Carter AFB idle mixture and speed adjustment screws. Be sure these ports are clear. See figure 9F-2. Piston force is too much for linkage. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. The accelerator pump circuit resides on the primary side of. 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. Pulloffs : CUFWCFB2 $ 0 . Fast, secure e-book download. With carburetor installed and engine warmed up. Hold throttle valve wide open and close choke valve as far as possible without forcing. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Carter WCFB Parts Page - carburetion.com 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. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Then close throttle. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. What more could you ask for? Test the fuel pump to be sure it isnt putting out too much pressure. 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. 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! 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. The correct way is to use a fuel pump pressure gauge. There should be a retainer keeping the check ball in place. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. The flat surface of the pump arm should be parallel to the straight edge. Can fill the accelerator chamber with a syringe (through top open passages of forward barrels where choke butterfly is) and the jets will spray gas into forward chambers (and will idle and accelerate for about 15 seconds)but when that gas is depleted, the spraying stops. 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. Did the old gasket get removed? Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. The setups data is the same. Correct by removing any burrs or nicks. Check any vents to make sure they are open. FREE to our customers that buy a rebuild kit. Be careful removing the intake check retainer. Can't find the answer you're looking for? Outside top of early Carter tool box with correct decal. This can be done by looking at the impression on bowl cover gasket. Back out throttle screw so that the throttle valve close completly. Carter WCFB 4 Barrel Carburetor Float System. They know their stuff and provide technical assistance and guides in both paper and video formats. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! The accelerator pump circuit resides on the primary side of this carburetor. You can also check the adjustment by measuring (F) which should be 18/64. The bowl vent is used to vent the float bowl, otherwise a siphoning of the gas can occur. Metering rods for the WCFB have been out of production for several years now. Tyler's Forgotten Car Rescue 22,933 views. Gasket removed. Ethanol leaves deposits behind that acts like corrosion. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Can't find the answer you're looking for? *New Main Body Gasket8. I have repeated multiple times with same results. Note te larger box, and the number of additional tools from the 1935 set. 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. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. When I slow down to an idle, my engine runs rough. 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 . This is an electronic rebuild manual, no physical copy will be provided. Fig. If not then clean it and try again. Make sure there is a check needle below the main discharge. When adjusting the screws doesn't change the RPM then it means there is a problem with either the air, or the amount of fuel. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Probably around 4- 4.5lbs. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Most of the single step rods were steel. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Good quality print. This allows air instead of fuel to be drawn off the pump jets. 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. Notice holes from which linkage rods are removed so they can Ideas?? cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Carter WCFB 4 Barrel Carburetor Float System. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Adjust idle screws D to produce a smooth idle of correct speed is obtained. 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 4 Barrel Carburetor Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. They are not meant to fill the hole, only to restrict it. You cannot go wrong with Mikes carburetor in any way. How To Replace the Carter WCFB 4 Barrel Fast Idle Spring? 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 He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. cm448. Carter Metering Rod Technology - THE CARBURETOR SHOP Must be made after fast idle adjustment. Clogged idle tube, or passages in the idle circuit. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads.A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. Please complete the fields below to send your friend a link to this product. (note) The metering rods will fit into the jets loosely. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. The WCFB carburetor which came on some of the earliest 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. Adjusting the WCFB float level and float drop. Should You Build Your Own Carter Carburetor? - Carb-O - MotorTrend Carter WCFB 4 Barrel Metering Rod - Mikes Carburetor Parts 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). 1955 Chevy Hard starting after flooding. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. However, it is very similar and I found it very useful. 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. Make sure these are clear if you have percolation problems. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. If hard starting still exists change the choke setting to one point lean. They are staked in the hole. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Do not depress float lip against spring in needle, but let float rest of its own weight. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Each size must be used in its own location. Someone has installed it improperly. Carter WCFB Build Sheets Make sure the air cleaner gasket does not block the bowl vents. 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. 1952 Carter WCFBsetting idle - Discussion Forums The Carter AFB uses weights, and therefore never goes out of adjustment. The discharge check is seated at this time to prevent air being drawn into the pump well. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. 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. It should not be opened up. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. 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. Carter WCFB Technical - Carburetor Parts Technical Details. 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. To correct, remove carburetor and turn it upside down. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Home - Carburetor Manual Ebooks Enter Carb Number. When done you should see very little daylight around the valve. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Make sure the pump relief check is clean. 3: Holley 4150 idle mixture and speed adjustment screws. During high speed operation a vacuum exists at the pump jets. Adjust by bending lip of float, not float arm. When closing the throttle, the accelerator moves up in the pump well. Aspringis inserted in the power piston hole, then the piston. Carter WGD Adjustments - Mikes Carburetor Parts 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. Both valves should be closed. WCFB carburetors, althqugh basically all units are allke. 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. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Change the choke setting to index. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Carter WCFB, 4 barrel metering rod adjustment instructions. Check the low speed jets to make sure they are clear (#44). Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. Place the choke housing toward the left and remove upper right main body to throttle body screw. 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. All These Part Numbers Interchange Into Our Part No. Carter WCFB 4 Barrel Adjust Float - YouTube What Has Been Done to This Carburetor?1. This eliminates any bog or hesitation when acceleration. 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. Rochester and Carter replacement parts are interchangeable. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Sometimes scraping around the edges with an awl will remove the staking. Older kits 30-70s. 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. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . You may even have to resort to finding a used WCFB carburetor. Adjust by bending throttle connector rod at upper angle (B). 60 pages of great info. New fuel pumps are especially suspect. Your friend will receive an email from you with a link to our site. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the 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. Quick test to see if the accelerator pump is working. Carter WCFB Rebuild kits: Rebuild Kits. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. If not, then find the check ball and make sure it is loose. Adjust by bending lip of float, not float arm. When that is the case, I bend the accel. Can you help me out? With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. Gasket removed as shown A. 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. All late model WCFB carburetors have three different length bowl cover screws. The well should fill with fluid. If a loss of rpm is noted, or if the engine dies, and air leak exists. 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 (. Can't find the answer you're looking for? One is in the secondary venturi and the other just above the throttle plate. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Rotate throttle stop screw E until engine idle at approx 500 RPM. Install the pump connector rod (D) in the outer hole, long stroke. 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 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. Adjust by bending unloader lip on throttle shaft lever. Can't find the answer you're looking for. Install the pump connector rod (D) in the outer hole, long stroke. This is percolation. . 5:04. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Any pressure put on the needle will damage it. Hold in place and carefully tighten metering rod arm set screw (G). 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Rotate throttle stop screw E until engine idle at approx 500 RPM. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Adjust by bending arm (J) on choke trip lever. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. 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. This restricts the flow of fuel. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. The carburetor will flood. cm448 Carter WCFB Carburetor Manual - carbkitsource.com A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. 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. Adjust by bending the connector rod at the lower bend (E). Blow through the intake check passage to be sure the passage is open. Carter 2 Barrel BBD Adjustments - YouTube Carter WCFB Carburetor Troubleshooting Seat the intake check by tapping lightly in the hole to form a good seal.

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