• Why Use the Edelbrock 1406

    Despite what many may think, carburetors still occupy a special place in the heart of automotive hobbyists. Proof of that is that renowned brands like Edelbrock still invest time and money in launching innovative products like its next-generation AVS2 Series Carburetors in addition to continuing producing legendary carburetors like the…

  • Carter WE Troubleshooting

    Carburetor Floods Here are some things you can look at, not in any order. When using an electric fuel pump be sure you have a regulator between the pump and the carburetor. Electric fuel pumps put out more pressure than your carburetor can handle. Set the regulator to 4 lbs….

  • Rochester B Troubleshooting pg2

    Watch a video about how to replace the main well tube Spark Plugs Burn Black This is an indication that the engine is running too rich. There are multiple reasons for this. Electrical is probably the main culprit so start there. Plugs, wires, distributor, etc. Other possibilities are float level,…

  • Autolite 4300 Accelerator Pump

    Accelerator Pump Stroke AdjustmentThe accelerator pump stroke has 3 possible adjustments depending on the ambient temperature.The center hole is for normal operations and by default you should use this hole.Hole 1 will decrease the fuel quantity – Use for hot weather.Hole 3 will increase the fuel quantity – Use for…

  • What Do Carburetor Numbers Look Like?

    Carter – 7504S, 7504SA 927S – Carter always has a ‘S’ at the end. Carter B&B Ball & Ball – D6H1 Ford – C034 AN – note: the 2nd digit is always a number. Holley – R 1234 1A, or R 1234 1, or R 1234 – The R may…

  • Autolite 4300 Idle

    How the Idle Circuit WorksUsing the vacuum from the carburetor bore, fuel is brought up through the idle tube and is mixed with air at the idle air bleed. This air/fuel mixture moves down to the idle mixture screw and out the idle hole into the bore. As rpm is…

  • AFB AVS Troubleshooting

    My AFB has a dashpot. Is it necessary? Yes, it works with the automatic transmission. Not good for the engine to run without the dashpot. Too much unburned fuel when stopping. Gas is dripping from the venturi after shutting down Main discharge may be leaking. Remove the venturi and with…

  • Carter RBS Which Kit?

    When you don’t have a carburetor number match your old accelerator pump with the 3 pumps above to determine the correct kit. Of course we assume you have the correct pump to begin with.

  • Carter WDO Adjustments

    All of the WDO instructions refer to a tool to adjust the metering rod. The tool is not available. Here is the work-a-round. In the absence of the Carter measuring tool for that purpose, I have found that simply loosening the lock screw of the metering rod cam, bottoming the…

  • Carter YFA Screw Specs

    Here is where we try to identify the screw sizes of the Carter YFA carburetor. We list our part number so you can click on the link and you will be taken to the product. Your carburetor must look exactly like the below pictures, or the screws may be different….