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. Rotate throttle stop screw E until engine idle at approx 500 RPM. Carter WCFB 4 Barrel Carburetor Float System. With mineral spirits in the float bowl, Raise the pump. 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. These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. In this video I show you how to replace the fast idle spring on the WCFB carburetor. Blow air through the main discharge to make sure the passage is clear all the way to the pump well. Carter WCFB Build Sheets 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. This E-manual is pictured with the Carter WCFB carburetor with the upper auto choke. You cannot go wrong with Mikes carburetor in any way. The download link will expire in 30 days. New fuel pumps are especially suspect. 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 Hold air horn upside down with floats in place and gasket removed. As the spring fatigues, the air valve will open too soon, creating an instantaneous lean condition, and a bog. 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). They work fine when I push hard down on the piston. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. Can't find the answer you're looking for? During high speed operation a vacuum exists at the pump jets. Someone has installed it improperly. Ultra-Sonic Cleaning3. Carter WCFB 4 Barrel Carburetor Float System Adjusting the WCFB float level and float drop. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Back out throttle stop screw until throttle valves seat in bores. 1956 Plymouth, Powerflite Transmission - Dashpot The dashpot has been eliminated. Carter WCFB 4 Barrel Adjust Float. Adjust by bending the choke connector rod at lower angle (H). Carter WCFB 4 Barrel Carburetor Float System, Engine wont idle, or dies after the choke is opened, or runs better when choke closed. This circuit provides a measured amount of fuel when needed on acceleration until the vacuum and main circuit can take over. 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! The download link can be found on your order confirmation email which you will receive as soon as you complete the order. On the WCFB the check ball is usually at the bottom of the pump well. Do not depress float lip against spring in needle, but let float rest of its own weight. This can be done by looking at the impression on bowl cover gasket. Adjust by bending throttle connector rod at upper angle (B). When that is the case, I bend the accel. Any bubbles indicates a leak.Make sure the 2 floats are the same height. Your friend will receive an email from you with a link to our site. The accelerator pump circuit resides on the primary side of this 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. Fast, secure e-book download. Ethanol gas does not have much if any lubrication. When Quadrajet carburetors have Carter's basic four-digit identification number before the letter S, the carburetors are aftermarket replacements. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Place the choke housing toward the left and remove upper right main body to throttle body screw. This is caused by side strain on throttle lever due to misalignment and maladjustment of the carburetor interconnection rod. You may even have to resort to finding a used WCFB carburetor. 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. 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. Why Doesn't Adjusting Idle Mixture Screws Make any Difference? They know their stuff and provide technical assistance and guides in both paper and video formats. If hard starting still exists change the choke setting to one point lean. 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. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . *New Airhorn Gasket7. Carter WCFB, 4 barrel metering rod adjustment instructions. Back out throttle lever set screw until throttle valves seat in bores of carburetor. WCFB Carburetor Cutting Out on Left Hand Turn. The setups data is the same. Tyler's Forgotten Car Rescue 22,933 views. Must be made after fast idle adjustment. The all-aluminum AFB (Aluminum Four Barrel) was a big innovation in 1957, and lives on today under the Edelbrock name. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. Can't find the answer you're looking for. Fuel pump working as it should (pulsates and sprays gas each time cam lobe activates it). Carter WCFB 4 Barrel Carburetor Float System. Carter WCFB 4 Barrel Carburetor Float System. Carter WCFB 4 Barrel Accelerator Pump Circuit 3,951 views Jul 13, 2018 33 Dislike Share Mikes Carburetor 20K subscribers https://www.carburetor-parts.com is providing this video about how the. Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. They are staked in the hole. Adjust idle screws D to produce a smooth idle of correct speed is obtained. Can you help me out? 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 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. *New Float6. You need to run wire down all small passages. 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. The piston is brass and can be damaged very easily. Can't find the answer you're looking for? 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. All late model WCFB carburetors have three different length bowl cover screws. Hold in place and carefully tighten metering rod arm set screw (G). Install the pump connector rod (D) in the outer hole, long stroke. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Any pressure put on the needle will damage it. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. It's highlighted yellow and will look something like this. Note te larger box, and the number of additional tools from the 1935 set. The fuel is also conducted through a passage in the air horn to the secondary needle seat. Test the floats in hot water and if you get any bubbles then they are leaking. 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. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Place the choke housing toward the left and remove upper right main body to throttle body screw. What more could you ask for? This allows air instead of fuel to be drawn off the pump jets. 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. If adjustment is required, remove dust cover and bend arm that operates the vent mechanism. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. Notice holes from which linkage rods are removed so they can 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. Change the choke setting to index. The file is in PDF format, you can download and save/print a copy. Make sure the ball rattles. 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. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Seat the intake check by tapping lightly in the hole to form a good seal. Quick test to see if the accelerator pump is working. Ultra-Sonic Cleaning3. Adjust by bending arm (J) on choke trip lever. Good quality print. cm448. Measure from center top surface of pontoons to air horn. Coat threads of screw with sealing compound and install it. Watch on. 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. With carburetor installed and engine warmed up. Press down on vacuum piston link C until metering rods bottom in the carburetor body. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Correct by removing any burrs or nicks. Gasket between bowl and base is installed backwards (easy to do). Because the float is maintained in a level position, needle valve bounce is minimized and excess fuel entry into the bowl is prevented. Use a brass drift punch. From my experience it is the most complete and comprehensive source for all things carburetor, encompassing a massive spectrum of makes models and applications. These diagrams include: Fig. 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 See figure 9F-2. The correct way is to use a fuel pump pressure gauge. Outside top of early Carter tool box with correct decal. 60 pages of great info. 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't find the answer you're looking for? One is in the secondary venturi and the other just above the throttle plate. Will Carter introduced the world's first 4-barrel carburetor, the WCFB (Will Carter Four Barrel) which raised air-flow to unprecedented levels. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. 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. 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). Could the float bowl actually be the problem? 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. Sometimes scraping around the edges with an awl will remove the staking. I have repeated multiple times with same results. 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. With throttle valves seated in bores, dust cover and gasket in place. Both valves should be closed. To correct, remove carburetor and turn it upside down. Blow through the intake check passage to be sure the passage is open. *New Main Body Gasket8. We will contact you as soon as this product is available. Technical Details. 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 If not then clean it and try again. Disassembly2. 5:04. 1955 Pontiac - Loading or Carburetor Flooding This is percolation. Other than that, great company to deal with. Carburetors equipped with an adjustable bowl vent require adjustment. 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. Solid fuel has the 2 tubes pointing up. Test the needle by holding it down gently with a brass drift punch. On 1956 models one point rich. The single step rods were used on some of the price leader carburetors (i.e. Make sure the pump relief check is clean. Piston force is too much for linkage. Did the old gasket get removed? Do not depress float lip against spring in needle, but let float rest of its own weight. William C. Carter was born in Union City Tennessee in 1884. Reinstall carburetor, align and readjust inter connecting rod to manufacturers specifications. This is an electronic rebuild manual, no physical copy will be provided. 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? 1: Carter WCFB idle mixture and speed adustment screw location. When looking to replace your metering rod keep in mind that Carter used several different lengths of rods in the WCFB. Install the pump connector rod (D) in the outer hole, long stroke. Coat threads of screw with sealing compound and install it.