How to Tune a 1406 Edelbrock
American-founded Edelbrock parts manufacturer was established in 1938 by Vic Edelbrock. Specializing in automotive and motorcycle exhaust and carburetor/fuel injection, the company caters to casual hobbyists and extreme motorists alike. When replacing the factory carburetor on your engine, it is important that the correct size is installed to ensure proper fuel and air mixture into the engine's intake manifold. Because a carbureted engine is such a dated design, your engine has probably seen quite a long life already. Tuning this aftermarket part is important in keeping the engine running at peak performance and fuel efficiency.
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Instructions
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1
Start your car's engine and let it idle for about 10 minutes. Take note of the engine's revolutions per minute, as this should be a fairly stable function. if you experience any deficiency in fuel consumption or slower acceleration than before, chances are that the newly-installed carburetor is not tuned properly to engine specifics.
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2
Open the hood of your car to access the engine. Grab a pair of latex gloves before inspecting any of the parts, as the engine is likely still very hot from running. Remove the air filter housing unit before proceeding onto carburetor tuning.
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3
Check the settings on the carburetor mixture screws and make sure they are specific to your engine's setup. The correct fuel and air mixture is vital in keeping your engine performing up to its fullest potential.
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4
Connect the tachometer gauge to the negative side of the ignition coil. While the car is idling, the tachometer gauge will give a true readout of revolutions the engine is producing per minute. Your car will have a tachometer inside the instrument panel, but this under-the-hood reading will save time and energy while performing time sensitive maintenance.
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5
Connect the vacuum gauge to the vacuum hoses that lead to the intake manifold of the engine. This device will accurately measure the amount of pressure that the carburetor distributes to the engine's intake manifold.
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6
Adjust the screws so that the mixture is the most lean that it can possibly be. This type of setting equates to a great build up of vacuum pressure before the accelerator pump of the engine activates. Monitor the RPM of the engine and adjust the screws so that the motor idles around 900 RPM.
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7
Press in on the engine's accelerator until the engine revolutions maximize in first gear. If the vacuum pressure changes during this procedure, an adjustment of the carburetor mixture screws is needed to balance. Adjust these screws accordingly until pressure is equalized.
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8
Remove the vacuum and tachometer gauges from their respective connections. Attach the air intake housing unit back on top of the engine's intake manifold and connect the negative port of the car's battery to complete this maintenance.
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Tips & Warnings
Wear gloves at all times to minimize injury.
