carter wcfb carburetor adjustmentgoblin commander units
The Carter AFB uses weights, and therefore never goes out of adjustment. If hard starting still exists change the choke setting to one point lean. It needs about 4 lbs of pressure. 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. With carburetor installed and engine warmed up. The WCFB carburetor which came on some of the earliest Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Can't find the answer you're looking for? Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. Back off the idle screw so that the throttle plates close completely. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. Do not depress float lip against spring in needle, but let float rest of its own weight. Solid fuel has the 2 tubes pointing up. This can be done by looking at the impression on bowl cover gasket. Can't find the answer you're looking for? They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Seat the discharge check by tapping lightly in the hole to form a good seal. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. 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. A WGD usually has a pump arm like that of a WCFB (IIRC). If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. If not, then find the check ball and make sure it is loose. . Aspringis inserted in the power piston hole, then the piston. Test the floats in hot water and if you get any bubbles then they are leaking. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Adjust by bending the choke connector rod at lower angle (H). Probably around 4- 4.5lbs. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. 60 pages of great info. Fast, secure e-book download. parts. Can you help me out? Notice holes from which linkage rods are removed so they can Measure float height as illustrated above. 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. One is in the secondary venturi and the other just above the throttle plate. 1st check to make sure the fast idle linkage isnt holding the valves open. See figure 9F-2. This restricts the flow of fuel. 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 . On the WCFB the check ball is usually at the bottom of the pump well. When closing the throttle, the accelerator moves up in the pump well. They sometimes need trimming. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. Add a couple drops of oil to the leather. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Hold air horn upside down with floats in place and gasket removed. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. 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 cfm of the Carter WCFB four-barrel carburetor is approximately 400. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Secondarys are somehow stuck open (which amounts to a vacuum leak). 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. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Place the choke housing toward the left and remove upper right main body to throttle body screw. The most complete document I have found. You are flooding (getting too much gas in the float bowl), caused by these types of problems. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. When that is the case, I bend the accel. Ideas?? This is an electronic rebuild manual, no physical copy will be provided. Clogged idle tube, or passages in the idle circuit. Is there a pointed check weight in the main discharge hole. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. You should feel some pressure and fluid should not be bypassing the check needle. This is an electronic rebuild manual, no physical copy will be provided. The mixture screw may be bent, or damaged. The suction along with the fuel weight pulls fuel through the intake check via the passage to the fuel bowl. Gasket removed. What Has Been Done to This Carburetor?1. Metering rods for the WCFB have been out of production for several years now. 1: Carter WCFB idle mixture and speed adustment screw location. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Disassembly2. Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB 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. Adjust by bending throttle connector rod at upper angle (B). The adjustment of the pump is important in order to get the required fuel. Gasket between bowl and base is installed backwards (easy to do). It's highlighted yellow and will look something like this. Press down on vacuum piston link C until metering rods bottom in the carburetor body. Coat threads of screw with sealing compound and install it. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Can't find the answer you're looking for? Fuel is puffing out nozzles on primary circuit at idle on primary carb of a dual carb set carbs were just rebuilt what is the cause. Carter WCFB 4 Barrel Carburetor Float System. Adjust by bending the connector rod at the lower bend (E). When replacing them hold them tight against the wall while tightening the screw. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. Can't find the answer you're looking for? 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. What more could you ask for? We will contact you as soon as this product is available. 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 ends of the connector rod should point to the throttle arm side. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Ultra-Sonic Cleaning3. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. Hold air horn upright with floats hanging. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. Adjust by bending lip of float, not float arm. 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). FREE to our customers that buy a rebuild kit. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. 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. Two ports act as calibrated air bleeds. *New Airhorn Gasket7. 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. Be sure these ports are clear. Run a blunt object around the inside of the leather cup to make sure any coating is broken. To correct, remove carburetor and turn it upside down. 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! Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Hold throttle valve wide open and close choke valve as far as possible without forcing. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. Make sure the air horn contacts the inner wall of the bowl. Each size must be used in its own location. 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. Carter WCFB, 4 barrel metering rod adjustment instructions. 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. Float drop not set, or fuel pump pressure too low. Adjust by bending throttle connector rod at deepest angle as shown. 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. 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. William C. Carter was born in Union City Tennessee in 1884. A balance passage connects the primary and secondary float chambers to provide fuel level control when the vehicle is accelerating, stopping, or rounding curves. 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. Make sure there is a check needle below the main discharge. Did the old gasket get removed? The download link will expire in 30 days. WCFB Carburetor Cutting Out on Left Hand Turn. Make sure manifold heat control valve is free. 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 . When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Seat the intake check by tapping lightly in the hole to form a good seal. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Enter Carb Number. 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. 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. *New Main Body Gasket8. 2: Carter AFB idle mixture and speed adjustment screws. *New Accelerator Pump5. You may even have to resort to finding a used WCFB carburetor. On 1956 models one point rich. Ethanol gas does not have much if any lubrication. They know their stuff and provide technical assistance and guides in both paper and video formats. This check prevents excessive pressure in the discharge passage during acceleration. b. Adjust by bending lip of float, not float arm. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. The download link can be found on your order confirmation email which you will receive as soon as you complete the order. Piston force is too much for linkage. If the secondary throttle plate is staying open, then check the primary shaft dog and spring. Ethanol leaves deposits behind that acts like corrosion. There should be a retainer keeping the check ball in place. The ends of the connector rod should point to the throttle arm side. 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). Tyler's Forgotten Car Rescue 22,933 views. To correct, remove carburetor and turn it upside down. Do not depress float lip against spring in needle, but let float rest of its own weight. The discharge check is seated at this time to prevent air being drawn into the pump well. 1957 Desoto Adventurer Loose Throttle Lever Rear Carburetor. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. Adjust by bending float arms, making sure both pontoons on each float are the same height. Make sure these are clear if you have percolation problems. BBS) and were basically an on/off condition similar to the function of a power valve. 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. Your friend will receive an email from you with a link to our site. Coat threads of screw with sealing compound and install it. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). Carter WCFB 4 Barrel Carburetor Float System. Install the pump connector rod (D) in the outer hole, long stroke. 1955 Chevy Hard starting after flooding. 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. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. 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. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. 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. Product information . 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. You cannot go wrong with Mikes carburetor in any way. You can also check the adjustment by measuring (F) which should be 18/64. Technical Details. Carter WCFB 4 Barrel Carburetor Float System. Gasket removed as shown A. 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). 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. Free shipping for many products! If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Watch on. Install the pump connector rod (D) in the outer hole, long stroke. Some have a coating to give it a better shelf life. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. 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. Examine the viton tip for any marks.Fuel pump pressure could be too high. The metering rod adjustment should be done after the pump adjustment. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. The accelerator pump circuit resides on the primary side of. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. This eliminates any bog or hesitation when acceleration. Recheck float adjustments. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Carburetors equipped with an adjustable bowl vent require adjustment. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Make sure the ball rattles. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). The fuel is also conducted through a passage in the air horn to the secondary needle seat. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. One of the butterflies is open about 1/8 with the carburetor dis assembled. Must be made after fast idle adjustment. 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 arm (J) on choke trip lever. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. The piston is brass and can be damaged very easily. Carter WCFB Build Sheets Carter WCFB 4 Barrel Adjust Float. I have repeated multiple times with same results. The single step rods were used on some of the price leader carburetors (i.e. Any bubbles indicates a leak.Make sure the 2 floats are the same height. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn 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 At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Blow through the intake check passage to be sure the passage is open. Hold in place and carefully tighten metering rod arm set screw (G). Refer to the Adjustment Data Table for adjustment dimensions. 1956 Plymouth, Powerflite Transmission Dashpot, 1955 Pontiac Loading or Carburetor Flooding, 1956 Pontiac Hard Starting, Partially Warm Engine. 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. The correct way is to use a fuel pump pressure gauge. 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. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Make sure the air cleaner gasket does not block the bowl vents. 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. They are not meant to fill the hole, only to restrict it. 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 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 should not be opened up. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Could the float bowl actually be the problem? Check throttle linkage to make sure that primary throttle valves come to full wide open position. Most of the single step rods were steel. As for the pump not squirting.I suspect the pump well isnt filling up. Sometimes scraping around the edges with an awl will remove the staking. Check the low speed jets to make sure they are clear (#44). 3: Holley 4150 idle mixture and speed adjustment screws. Share. 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. It will be very helpful as I try to improve my performance and emissions of my 57 Corvette street machine. Both valves should be closed. If the fuel bowl is not filling up enough to fill the pump well, then look at a sticking float needle. During high speed operation a vacuum exists at the pump jets. 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. Air Bled has the venturi tube pointing down into the bore. 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. With throttle valves seated in bores, dust cover and gasket in place. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. The adjustment of the pump is important in order to get the required fuel. The flat on top of the pump arm should be parallel to the straight edge. 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 Rotate throttle stop screw E until engine idle at approx 500 RPM. *New Float6. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. 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.