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. cm448. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Can't find the answer you're looking for? Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. The ends of the connector rod should point to the throttle arm side. 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. The carburetor will flood. 1955 Chevy Hard starting after flooding. The accelerator pump circuit resides on the primary side of. Must be made after fast idle adjustment. Put some fluid in theaccelerator pumpwell and press down on the pump. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. 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 Carter AFB uses weights, and therefore never goes out of adjustment. Make sure the air cleaner gasket does not block the bowl vents. What more could you ask for? One of the butterflies is open about 1/8 with the carburetor dis assembled. On the WCFB the check ball is usually at the bottom of the pump well. Probably not since only one butterfly is open. Disassembly2. Rochester and Carter replacement parts are interchangeable. The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. Ethanol leaves deposits behind that acts like corrosion. 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. Gasket between bowl and base is installed backwards (easy to do). When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. 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. Both valves should be closed. Back out throttle stop screw until throttle valves seat in bores. Please complete the fields below to send your friend a link to this product. 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. What Has Been Done to This Carburetor?1. Adjust by bending throttle connector rod at deepest angle as shown. The flat surface of the pump arm should be parallel to the straight edge. No metering rod gauges are necessary. Make sure the ball rattles. Hold throttle valve wide open and close choke valve as far as possible without forcing. Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. 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. All These Part Numbers Interchange Into Our Part No. 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? 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. 1956 Chevrolet Corvette & Super Power Kit Engine Idle Speed, Idle Mixture and Throttle Linkage Adjustment Procedure. 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 Adjust by bending unloader lip on throttle shaft lever. Add a couple drops of oil to the leather. 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. Carter WCFB Rebuild kits: Rebuild Kits. 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. Adjust by bending lip of float, not float arm. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. When closing the throttle, the accelerator moves up in the pump well. A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). The cfm of the Carter WCFB four-barrel carburetor is approximately 400. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. If not then clean it and try again. pump rod until the top of the pump arm is horizontal (or the screw that retrains it is perfectly vertical, if you prefer). You cannot go wrong with Mikes carburetor in any way. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. The download link will expire in 30 days. You are flooding (getting too much gas in the float bowl), caused by these types of problems. Loosen the clamp screw A Press. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. The correct way is to use a fuel pump pressure gauge. Make sure the pontoons are centered and will not rub the bowl sides. Carter WCFB Adjustments Metering Rod Adjustment Back out throttle screw so that the throttle valve close completly. Download was not the correct rebuild instructions for my WCFB carburetor, and the correct version was not available. It's highlighted yellow and will look something like this. Could the float bowl actually be the problem? 1st check to make sure the fast idle linkage isnt holding the valves open. When done you should see very little daylight around the valve. 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 At idle you are at maximum vacuum which makes the metering rods drop down into the main jets. In this video I show you how to replace the fast idle spring on the WCFB carburetor. Ideas?? The fuel is also conducted through a passage in the air horn to the secondary needle seat. If a loss of rpm is noted, or if the engine dies, and air leak exists. Aspringis inserted in the power piston hole, then the piston. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. 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. Ultra-Sonic Cleaning3. 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. He only had 5-years of formal education and in 1909, he founded the Carter Carburetor Manufacturing Co in St. Louis. Test the fuel pump to be sure it isnt putting out too much pressure. Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Measure from toe B to air horn. Check any vents to make sure they are open. Free shipping for many products! Complete service manual: Comprehensive factory service information (341 pages) for the Carter WCFB carburetor. Fig. 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. Piston force is too much for linkage. Install the pump connector rod (D) in the outer hole, long stroke. Float drop not set, or fuel pump pressure too low. Someone has installed it improperly. 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. They sometimes need trimming. 1: Carter WCFB idle mixture and speed adustment screw location. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. 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). Make sure manifold heat control valve is free. The idle mixture screws adjust the amount of air/fuel mixture that goes up to the venturi at idle. I. DISASSEMBLY. Can't find the answer you're looking for? Outside top of early Carter tool box with correct decal. 2: Carter AFB idle mixture and speed adjustment screws. Your friend will receive an email from you with a link to our site. This check prevents excessive pressure in the discharge passage during acceleration. On 1956 models one point rich. 60 pages of great info. Each float on the float assembly should be at the same height and centered so that they dont rub the side of the float bowl. Carter WCFB Fast Idle With carburetor installed and engine warmed up. DO NOT apply any pressure on the needle. Did the old gasket get removed? Disassembly2. Test the floats in hot water and if you get any bubbles then they are leaking. There should be a retainer keeping the check ball in place. With mineral spirits in the float bowl, Raise the pump. Each size must be used in its own location. Back out throttle screw so that the throttle valve close completly. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. 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. Can't find the answer you're looking for. WCFB Carburetor Cutting Out on Left Hand Turn. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. parts. You should feel some pressure and fluid should not be bypassing the check needle. Float adjusted wrong check float level.Float leaking heat up some water and immerse the float. Make sure these are clear if you have percolation problems. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications.

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