carter wcfb carburetor adjustment

Technical Details. 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. Blowing out passages will not get them clean enough. Make sure manifold heat control valve is free. 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. Carter WCFB 4 Barrel Carburetor Float System Run a blunt object around the inside of the leather cup to make sure any coating is broken. Metering rods for the WCFB have been out of production for several years now. Carter WCFB 4 Barrel Adjust Float - YouTube If a loss of rpm is noted, or if the engine dies, and air leak exists. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Can't find the answer you're looking for? You are flooding (getting too much gas in the float bowl), caused by these types of problems. Use a brass drift punch. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. 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. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Both valves should be closed. 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 Most of the single step rods were steel. Gasket removed. Hold air horn upside down with floats in place and gasket removed. Install the pump connector rod (D) in the outer hole, long stroke. The vacuum piston is no longer produced and can only be found as a NOS piece, or used. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . Carter 2 Barrel BBD Adjustments - YouTube Test the floats in hot water and if you get any bubbles then they are leaking. Can't find the answer you're looking for? Gasket removed as shown A. Adjust by bending lip of float, not float arm. Adjust by bending unloader lip on throttle shaft lever. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. You can also check the adjustment by measuring (F) which should be 18/64. . 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. Carter WCFB Accelerator Pump - Mikes Carburetor Parts The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. The mixture screw may be bent, or damaged. DO NOT apply any pressure on the needle. The adjustment of the pump is important in order to get the required fuel. Rotate throttle stop screw E until engine idle at approx 500 RPM. b. The metering rods must be installed after the pump adjustment or when leaner than standard rods are installed. This restricts the flow of fuel. When removing valves they should be marked so that they get put back the same way. Carter Carburetor Identification - Carburetor kits, parts and manuals PDF Parts List Carter Carburetor Model Wcfb Sometimes scraping around the edges with an awl will remove the staking. Adjust by bending arm (J) on choke trip lever. Can't find the answer you're looking for. Rochester and Carter replacement parts are interchangeable. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. BBS) and were basically an on/off condition similar to the function of a power valve. There should now be 9/64 clearance between upper edge of choke valve and inner wall of air horn. This check prevents excessive pressure in the discharge passage during acceleration. Back off the idle screw so that the throttle plates close completely. Rotate throttle stop screw E until engine idle at approx 500 RPM. Other than that, great company to deal with. Refer to the Adjustment Data Table for adjustment dimensions. Using the exploded view on reverse side as a guide, disassemble the carburetor far enough to permit thorough cleaning and inspec tion o! 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. Seat the discharge check by tapping lightly in the hole to form a good seal. 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 idle screws D to produce a smooth idle of correct speed is obtained. Servicing The Rochester Quadrajet Carburetor - MotorTrend Make sure the pontoons are centered and will not rub the bowl sides. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). 19591961 Chevrolet Carter WCFB Carburetor 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 . Carter Carburetor Manual Adjust by bending lip of float, not float arm. Make sure these are clear if you have percolation problems. This eliminates any bog or hesitation when acceleration. With mineral spirits in the float bowl, Raise the pump. The accelerator pump circuit resides on the primary side of this carburetor. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. When replacing them hold them tight against the wall while tightening the screw. Be careful removing the intake check retainer. Disassembly2. Adjusting the WCFB float level and float drop. If not then clean it and try again. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. 3: Holley 4150 idle mixture and speed adjustment screws. Coat threads of screw with sealing compound and install it. At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. These diagrams include: Fig. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. Carter WCFB 4 Barrel Carburetor Rebuild - YouTube 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. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. Some have a coating to give it a better shelf life. The download link will expire in 30 days. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Back out throttle lever set screw until throttle valves seat in bores of carburetor. It's highlighted yellow and will look something like this. THE CARBURETOR SHOP / Troubleshooting You should feel some pressure and fluid should not be bypassing the check needle. *New Accelerator Pump5. 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. Fig. Measure from center top surface of pontoons to air horn. Can't find the answer you're looking for? Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Carter WCFB 4 Barrel Carburetor Float System. 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. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. 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 throttle valves seated in bores, dust cover and gasket in place. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. Add a couple drops of oil to the leather. 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. This restricts the flow of fuel. Quick test to see if the accelerator pump is working. This allows air instead of fuel to be drawn off the pump jets. 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 (. 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. 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. What Has Been Done to This Carburetor?1. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. 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). To correct, remove carburetor and turn it upside down. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. 1: Carter WCFB idle mixture and speed adustment screw location. Someone has installed it improperly. 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. When closing the throttle, the accelerator moves up in the pump well. 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. Solid fuel has the 2 tubes pointing up. It needs about 4 lbs of pressure. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Carter WCFB Metering Rods - carburetor-parts.com Carter WCFB Carburetor Manual - Mike's Carburetor Parts (note) The metering rods will fit into the jets loosely. Put some fluid in theaccelerator pumpwell and press down on the pump. Ethanol leaves deposits behind that acts like corrosion. The ends of the connector rod should point to the throttle arm side. Carter WCFB, 4 barrel carburetor manual. 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. The fuel is also conducted through a passage in the air horn to the secondary needle seat. WCFB | Carter Carburetors, Parts & Rebuild Kits Can't find the answer you're looking for? When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. As for the pump not squirting.I suspect the pump well isnt filling up. 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 They sometimes need trimming. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. With carburetor installed and engine warmed up. Carter WCFB Carburetor Troubleshooting Could the float bowl actually be the problem? 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. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. FREE to our customers that buy a rebuild kit. 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. When I slow down to an idle, my engine runs rough. You may even have to resort to finding a used WCFB 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. 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. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Carter WCFB Accelerator Pump Adjustment The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. The file is in PDF format, you can download and save/print a copy. Carter WGD Adjustments - Mikes Carburetor Parts Maximum float buoyancy is generally accomplished when the float pontoons are at a 90-degree angle to the fuel valve. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Watch this. Should You Build Your Own Carter Carburetor? - Carb-O - MotorTrend 41-98N Carter 2366S Carter 2505S Carter 2555S Carter 2655S Carter 2669S. 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. WCFB carburetors, althqugh basically all units are allke. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). Recheck float adjustments. Adjust by bending throttle connector rod at deepest angle as shown. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. 60 pages of great info. Please complete the fields below to send your friend a link to this product. The accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Put a straight edge across the dust cover as illustrated. 1955 Chevy Hard starting after flooding. parts. REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. The most complete document I have found. Make sure the air horn contacts the inner wall of the bowl. All These Part Numbers Interchange Into Our Part No. Carter WCFB 4 Barrel Adjust Float. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? Make sure the ball rattles. They work fine when I push hard down on the piston.