Edelbrock Carb idle issues

[piecesparts]

Setting the idle with a vacuum gauge:

Connect the gauge to a vacuum port on your intake manifold (it is better to not use one off of the carb base--better signal response from the manifold). With the engine running at what you would like for an idle speed ( I chose about 800 RPMs for mine) adjust one of the idle/air mix screws inward until you get a drop in idle speed. Next turn that screw outward watching the vacuum gauge for an increase in vacuum signal. When that signal stops increasing stop there. Now, do the other idle/air mix screw the same way and watch the vacuum signal for an increase. NOTE: You may have to adjust your idle speed on the carb to keep it where you want it.

NOW: Do the same process once again with each of the screws until you are sure that you have the best adjustment capable.

FINALLY: The last thing you want to do is turn both of the idle/air mix screws inward an 1/8th of a turn. You are done with setting the mixture on your idle settings.


A torque wrench is a tool for those that have no clue what a hammer is really for!