• Carter BB-1 Troubleshooting

    Why is my Carburetor Flooding? Test the needle & seat for leaks Test the fuel pump pressure. Check with the motors manual for exact measurement but close to 4 lbs, or less. Too much pressure will cause the needle to open pre-maturely. Is the float leaking. Can you hear gas…

  • Holley 2210 & 2245 Adjustments

    How to Set the Float Level When measuring the float setting, be sure that weight of float only is forcing needle & seat, otherwise damage to the needle can occur. Float Drop With air horn in normal position bottom edge of float should be parallel to underside surface of air…

  • Holley 2210 2245 Specifications

    CARB NO FAST IDLE PUMP FLOAT LEVEL FAST IDLE CAM VACUUM KICK UNLOADER R-6452A 1900 .250 .180 .110 .150 .170 R-6454A 1800 .250 .180 .110 .150 .170 R-6472A 1800 .250 .180 .110 .150 .170

  • Motorcraft 4300 Adjustments

    Fast Idle Speed Float Level Adjustment There are 2 float adjustments, one for the main or primary valve and one for the auxiliary valve. The float setting, which controls the fuel level in the bowl, is critical because the fuel level affects calibration. In most cases the auxiliary won’t need…

  • Carter Thermoquad Adjustments

    How To Adjust the Float With bowl cover inverted, gasket installed, and floats resting on the seated needle, measure distance from bowl cover gasket to bottom of float. If measurement is not correct (see specifications), bend float as required. Do not allow lip of float to press on needle while…

  • How To Test Fuel Pump

    Engines with carburetors Make sure there is gas in the tank Look for any bends, or kinks in the fuel line. Older rubber fuel line can be damaged by ethanol. Replace with fuel injection line. Disconnect the fuel line at the carburetor. Disconnect the distributor coil wire so the engine…

  • Holley 1945 Float

    How to Set Float Level Invert main carburetor body (bowl cover gasket in place), and place a straightedge across gasket surface and the portion of float pontoons farthest from fuel inlet. Float should just touch straightedge. To adjust, bend float tang.

  • Motorcraft 2700 VV Float

    How to Set Float Level? Install new gasket prior to making adjustment. Invert upper body assembly and, using suitable gauging tool, place gauge on CAST surface of upper body. Do not rest gauge on gasket. Measure distance from cast surface to float bottom. Bend float lever away from fuel inlet…