They sometimes need trimming. Adjusting the WCFB float level and float drop. Correct by removing any burrs or nicks. We will contact you as soon as this product is available. Aspringis inserted in the power piston hole, then the piston. Back out throttle stop screw until throttle valves seat in bores. It isn't unusual for the vacuum piston on the WCFB to become frozen in the cylinder where it resides. Anti-Rust "Dichromate" Finish**4. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. One of the butterflies is open about 1/8 with the carburetor dis assembled. Carter built the first successful 4 barrel carburetor, the WCFB (Will Carter Four Barrel) which first appeared in 1953 on Buick cars. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Probably around 4- 4.5lbs. 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! When replacing them hold them tight against the wall while tightening the screw. 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 the engine gets hot and then is shut off, gas can sometimes overheat and then boil. Make sure the air cleaner gasket does not block the bowl vents. Low fuel pump pressure always check you motors manual for the correct pressure. Carter WCFB Rebuild kits: Rebuild Kits. 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. Measure from center top surface of pontoons to air horn. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. 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). *New Airhorn Gasket7. Loosen the clamp screw A Press. Install the pump connector rod (D) in the outer hole, long stroke. Do not depress float lip against spring in needle, but let float rest of its own weight. Quick test to see if the accelerator pump is working. Place the choke housing toward the left and remove upper right main body to throttle body screw. Check the low speed jets to make sure they are clear (#44). A fuel pump cannot be tested by unhooking the line and seeing if gas comes out. Two ports act as calibrated air bleeds. 1: Carter WCFB idle mixture and speed adustment screw location. When that is the case, I bend the accel. Hold air horn upside down with floats in place and gasket removed. Put a straight edge across the dust cover as illustrated. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Gasket removed as shown A. 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. 41-108N Carter 2818S Carter 3059S What Has Been Done to This Carburetor?1. Buy REMANUFACTURED CARTER WCFB CARBURETOR 3696S For 1958-1965 Chevrolet Corvette 327 348: Carburetors . Carter WCFB 4 Barrel Carburetor Float System. but if it runs well you don't really need to make any adjustments. Back out throttle lever set screw until throttle valves seat in bores of carburetor. Carter WCFB 4 Barrel Carburetor Float System. If it is, tap gently with a hammer and the same brass drift punch to seat it, or replace the check weight. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Both valves should be closed. We use a small bottle type of brush and spray silicon spray into the cylinder while we clean. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. I have a 1952 Buick Roadmaster and just rebuilt the Carter WCFB carb, and I'm setting the idle according to the factory manual. Rotate throttle stop screw E until engine idle at approx 500 RPM. Can't find the answer you're looking for? New fuel pumps are especially suspect. Hold throttle valve wide open and close choke valve as far as possible without forcing. Test the needle by holding it down gently with a brass drift punch. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. 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. If hard starting still exists change the choke setting to one point lean. 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. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. 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. Includes theory, diagrams, detailed specifications, tune-up data and complete overhaul procedures. 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. Gasket between bowl and base is installed backwards (easy to do). They know their stuff and provide technical assistance and guides in both paper and video formats. Can't find the answer you're looking for? Inspiration for this arrangement was provided by the federal government through its exhaust emissions regulations. 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. You can also check the adjustment by measuring (F) which should be 18/64. 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. To correct, remove carburetor and turn it upside down. Hold a straight edge across top of dust cover housing, next to the pump arm. The most complete document I have found. They need to be centered in the bowl.Fuel could be leaking around the needle & seat. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. (note) The metering rods will fit into the jets loosely. Some models have a pump relief check in the bottom of the fuel bowl. The file is in PDF format, you can download and save/print a copy. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. 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. Must be made after fast idle adjustment. Any bubbles indicates a leak.Make sure the 2 floats are the same height. How to Adjust a Carter BBD 2 Barrel | It Still Runs The Carter carburetor has been around for a very long time. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). The flat on top of the pump arm should be parallel to the straight edge. BBS) and were basically an on/off condition similar to the function of a power valve. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Other than that, great company to deal with. Look for breaks in the new gasket, or cracks around the threaded area.The needle could have been damaged while adjusting the floats. Everyone Has Started an Engine in the . Outside top of early Carter tool box with correct decal. To correct, remove carburetor and turn it upside down. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. The discharge check is seated at this time to prevent air being drawn into the pump well. Adjusting the WCFB Metering Rods The Carter WCFB, 4 barrel carburetor metering rods are used to meter the fuel getting into the carburetor bore. You are flooding (getting too much gas in the float bowl), caused by these types of problems. WCFB Carburetor Cutting Out on Left Hand Turn. The single step rods were used on some of the price leader carburetors (i.e. This box did not have a part number. Ideas?? Be careful removing the intake check retainer. Back out the throttle lever set screw (idle screw) to allow throttle valves to seat in the bores of the carburetor. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Make sure the pump relief check is clean. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. I have repeated multiple times with same results. 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. Watch this. You may even have to resort to finding a used WCFB carburetor. Could the float bowl actually be the problem? One is in the secondary venturi and the other just above the throttle plate. Pulloffs : CUFWCFB2 $ 0 . Adjust by bending lip of float, not float arm. With throttle valves seated in bores, dust cover and gasket in place. Adjust by bending throttle connector rod at deepest angle as shown. 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. Manufacturer CARTER : Brand CARTER WCFB : Model Carter 4 BBL WCFB : Item Weight 12 pounds : Country of Origin USA . Seat the intake check by tapping lightly in the hole to form a good seal. You will need to check your motors manual for the spec, but around 4 or 5 should be plenty. 5:04. Use a brass drift punch. 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 accelerator pump is used to provide an extra squirt of fuel when you step on the gas. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Adjust by bending the choke connector rod at lower angle (H). Blowing out passages will not get them clean enough. The adjustment of the pump is important in order to get the required fuel. Clogged idle tube, or passages in the idle circuit. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. Carter WCFB, 4 barrel carburetor manual. This check prevents excessive pressure in the discharge passage during acceleration. Make sure the air horn contacts the inner wall of the bowl. What Has Been Done to This Carburetor?1. Is there a pointed check weight in the main discharge hole. 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. *New Main Body Gasket8. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Watch on. 2: Carter AFB idle mixture and speed adjustment screws. There should be a retainer keeping the check ball in place. Recheck unloader settings with carburetor on the engine. Your friend will receive an email from you with a link to our site. On the WCFB the check ball is usually at the bottom of the pump well. Install the pump connector rod (D) in the outer hole, long stroke. 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).